| -- |
| -- PostgreSQL port of the MySQL "World" database. |
| -- |
| -- The sample data used in the world database is Copyright Statistics |
| -- Finland, http://www.stat.fi/worldinfigures. |
| -- |
| -- Modified to use it with GPDB |
| set extra_float_digits=0; |
| --start_ignore |
| create schema qp_with_clause; |
| set search_path = qp_with_clause; |
| DROP TABLE IF EXISTS city cascade; |
| NOTICE: table "city" does not exist, skipping |
| DROP TABLE IF EXISTS country cascade; |
| NOTICE: table "country" does not exist, skipping |
| DROP TABLE IF EXISTS countrylanguage cascade; |
| NOTICE: table "countrylanguage" does not exist, skipping |
| --end_ignore |
| SET optimizer_trace_fallback=on; |
| BEGIN; |
| --SET client_encoding = 'LATIN1'; |
| CREATE TABLE city ( |
| id integer NOT NULL, |
| name text NOT NULL, |
| countrycode character(3) NOT NULL, |
| district text NOT NULL, |
| population integer NOT NULL |
| ) distributed by(id); |
| CREATE TABLE country ( |
| code character(3) NOT NULL, |
| name text NOT NULL, |
| continent text NOT NULL, |
| region text NOT NULL, |
| surfacearea numeric(10,2) NOT NULL, |
| indepyear smallint, |
| population integer NOT NULL, |
| lifeexpectancy real, |
| gnp numeric(10,2), |
| gnpold numeric(10,2), |
| localname text NOT NULL, |
| governmentform text NOT NULL, |
| headofstate text, |
| capital integer, |
| code2 character(2) NOT NULL |
| ) distributed by (code); |
| CREATE TABLE countrylanguage ( |
| countrycode character(3) NOT NULL, |
| "language" text NOT NULL, |
| isofficial boolean NOT NULL, |
| percentage real NOT NULL |
| )distributed by (countrycode,language); |
| COPY city (id, name, countrycode, district, population) FROM stdin; |
| -- |
| -- Data for Name: country; Type: TABLE DATA; Schema: public; Owner: chriskl |
| -- |
| COPY country (code, name, continent, region, surfacearea, indepyear, population, lifeexpectancy, gnp, gnpold, localname, governmentform, headofstate, capital, code2) FROM stdin WITH NULL AS ''; |
| -- |
| -- Data for Name: countrylanguage; Type: TABLE DATA; Schema: public; Owner: chriskl |
| -- |
| COPY countrylanguage (countrycode, "language", isofficial, percentage) FROM stdin; |
| ALTER TABLE ONLY city |
| ADD CONSTRAINT city_pkey PRIMARY KEY (id); |
| ALTER TABLE ONLY country |
| ADD CONSTRAINT country_pkey PRIMARY KEY (code); |
| ALTER TABLE ONLY countrylanguage |
| ADD CONSTRAINT countrylanguage_pkey PRIMARY KEY (countrycode, "language"); |
| COMMIT; |
| ANALYZE city; |
| ANALYZE country; |
| ANALYZE countrylanguage; |
| -- queries with one CTE that is referenced once |
| -- Using CTE in the FROM clause |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital; |
| name | name | cnt |
| --------------------+------------------+----- |
| Austria | Wien | 8 |
| Russian Federation | Moscow | 12 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| Canada | Ottawa | 12 |
| United States | Washington | 12 |
| South Africa | Pretoria | 11 |
| Iran | Teheran | 10 |
| Australia | Canberra | 8 |
| India | New Delhi | 12 |
| (12 rows) |
| |
| --query5 -Using a CTE in the select list |
| with bigcities as |
| ( |
| select city.id,city.name,city.population,city.countrycode |
| from city |
| where city.population >= 0.5 * (select population from country where country.code=city.countrycode) |
| ) |
| select |
| (select max(bigcities.population) from bigcities where bigcities.countrycode='QAT') as MAX_POP, |
| (select avg(bigcities.population) from bigcities) AS WORLD_AVG, |
| city.name,city.population |
| from |
| city where city.countrycode='QAT'; |
| max_pop | world_avg | name | population |
| ---------+---------------------+------+------------ |
| 355000 | 376916.466666666667 | Doha | 355000 |
| (1 row) |
| |
| --query6 using CTE in the select list with a qual |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select * from |
| ( |
| select |
| (select max(CNT) from diversecountries where diversecountries.code = country.code) CNT,country.name COUNTRY,city.name CAPITAL |
| from country,city where country.capital = city.id) FOO where FOO.CNT is not null; |
| cnt | country | capital |
| -----+--------------------+------------------ |
| 8 | Austria | Wien |
| 12 | Russian Federation | Moscow |
| 12 | China | Peking |
| 8 | Myanmar | Rangoon (Yangon) |
| 10 | Iran | Teheran |
| 11 | South Africa | Pretoria |
| 12 | United States | Washington |
| 8 | Italy | Roma |
| 12 | Canada | Ottawa |
| 7 | Denmark | Kobenhavn |
| 8 | Australia | Canberra |
| 12 | India | New Delhi |
| (12 rows) |
| |
| --queries Using a CTE in the HAVING clause |
| with notdiversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) < 3) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select country.name COUNTRY,city.name CAPITAL,count(*) LANGCNT from |
| country,city,countrylanguage |
| where country.code = countrylanguage.countrycode and country.capital = city.id |
| group by country.name,city.name |
| HAVING count(*) NOT IN (select CNT from notdiversecountries where notdiversecountries.name = country.name) |
| order by country.name |
| LIMIT 10; |
| country | capital | langcnt |
| ---------------------+------------------+--------- |
| Afghanistan | Kabul | 5 |
| Albania | Tirana | 3 |
| Algeria | Alger | 2 |
| American Samoa | Fagatogo | 3 |
| Andorra | Andorra la Vella | 4 |
| Angola | Luanda | 9 |
| Anguilla | The Valley | 1 |
| Antigua and Barbuda | Saint Johns | 2 |
| Argentina | Buenos Aires | 3 |
| Armenia | Yerevan | 2 |
| (10 rows) |
| |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| |
| |
| -- ensure select includes with clause in it's syntax |
| -- query 1 using the same name for the CTE as a table. Main query should reference the CTE |
| with country as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from country where isofficial='True') e1, |
| (select * from country where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language LIMIT 20; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+------------------------+----------------+------------+------------+------+------------------------+------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| (20 rows) |
| |
| -- query 2 using multiple CTEs with same names as tables. |
| with country as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe'), |
| countrylanguage(code1,country1,capital1,language1,isofficial1,percentage1,code2,country2,capital2,language2,isofficial2,percentage2) as |
| ( |
| select * from |
| (select * from country where isofficial='True') e1, |
| (select * from country where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language |
| ) |
| select code1,country1,capital1,language1,isofficial1,percentage1,country.COUNTRY from country,countrylanguage where country.code = countrylanguage.code1 |
| and country.percentage = countrylanguage.percentage1 |
| order by COUNTRY,percentage1 LIMIT 20;-- queries using same name for CTEs and the subquery aliases in the main query |
| code1 | country1 | capital1 | language1 | isofficial1 | percentage1 | country |
| -------+------------------------+------------------------+----------------+-------------+-------------+------------------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | Albania |
| AUT | Austria | Wien | German | t | 92 | Austria |
| BLR | Belarus | Minsk | Russian | t | 32 | Belarus |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | Belarus |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | Belgium |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | Belgium |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | Belgium |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | Bosnia and Herzegovina |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | Bulgaria |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | Croatia |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | Czech Republic |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | Denmark |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | Estonia |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | Faroe Islands |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | Faroe Islands |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | Finland |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | Finland |
| FRA | France | Paris | French | t | 93.6 | France |
| DEU | Germany | Berlin | German | t | 91.3 | Germany |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | Gibraltar |
| (20 rows) |
| |
| -- query1 |
| with c1 as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe'), |
| c2 as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Asia') |
| select * from |
| (select * from c1 where isofficial='True') c1, |
| (select * from c2 where percentage > 50) c2 |
| where c1.percentage = c2.percentage order by c2.COUNTRY,c1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+---------------+------------+----------------+------------+------------+------+------------+---------+----------------+------------+------------ |
| LIE | Liechtenstein | Vaduz | German | t | 89 | AZE | Azerbaijan | Baku | Azerbaijani | t | 89 |
| AUT | Austria | Wien | German | t | 92 | CHN | China | Peking | Chinese | t | 92 |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | JOR | Jordan | Amman | Arabic | t | 97.9 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | MAC | Macao | Macao | Canton Chinese | f | 85.6 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | MDV | Maldives | Male | Dhivehi | t | 100 |
| SMR | San Marino | San Marino | Italian | t | 100 | MDV | Maldives | Male | Dhivehi | t | 100 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | PSE | Palestine | Gaza | Arabic | f | 95.9 |
| (7 rows) |
| |
| -- query2 using same names as tables |
| with country as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe'), |
| countrylanguage as |
| (select country.code,country.COUNTRY,country.language,country.isofficial,country.percentage |
| FROM country,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| ) |
| select * from |
| (select * from country where isofficial='True') country, |
| (select * from countrylanguage where percentage > 50) countrylanguage |
| where country.percentage = countrylanguage.percentage order by countrylanguage.COUNTRY,country.language LIMIT 40; |
| code | country | capital | language | isofficial | percentage | code | country | language | isofficial | percentage |
| ------+------------------------+---------------------+----------------+------------+------------+------+------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Albaniana | t | 97.9 |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Albaniana | t | 97.9 |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Bulgariana | t | 83.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Bulgariana | t | 83.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Bulgariana | t | 83.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Serbo-Croatian | t | 95.9 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Danish | t | 93.5 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Danish | t | 93.5 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Danish | t | 93.5 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Danish | t | 93.5 |
| (40 rows) |
| |
| -- Using the same name for the CTE at every subquery-level |
| select avg(population12),CITY12 |
| from |
| ( |
| with city(CITY1,POPULATION1) as (select city.name,city.population from city where city.population >= 100) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY2,POPULATION2) as ( select city1,population1 from city where population1 >= 1000 ) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY3,POPULATION3) as (select city2,population2 from city where population2 >= 10000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY4,POPULATION4) as (select city3,population3 from city where population3 >= 20000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY5,POPULATION5) as (select city4,population4 from city where population4 >= 50000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY6,POPULATION6) as (select city5,population5 from city where population5 >= 80000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY7,POPULATION7) as (select city6,population6 from city where population6 >= 150000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY8,POPULATION8) as (select city7,population7 from city where population7 >= 200000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY9,POPULATION9) as (select city8,population8 from city where population8 >= 250000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY10,POPULATION10) as (select city9,population9 from city where population9 >= 300000) |
| select city12,population12 from |
| ( |
| with city(CITY11,POPULATION11) as (select city10,population10 from city where population10 >= 6500000) |
| select CITY12,POPULATION12 from |
| ( |
| with city(CITY12,POPULATION12) as (select city11,population11 from city where population11 >= 7000000) |
| select s1.city12,s1.population12 from city s1,city s2 |
| ) FOO11 |
| ) FOO10 |
| ) FOO9 |
| ) FOO8 |
| ) FOO7 |
| ) FOO6 |
| ) FOO5 |
| ) FOO4 |
| )FOO3 |
| ) FOO2 |
| ) FOO1 |
| ) FOO0 group by city12 order by city12;-- negative cases where queries have duplicate names in CTEs |
| avg | city12 |
| -----------------------+------------------ |
| 8591309.000000000000 | Ciudad de Mexico |
| 7206704.000000000000 | Delhi |
| 8787958.000000000000 | Istanbul |
| 9604900.000000000000 | Jakarta |
| 9269265.000000000000 | Karachi |
| 7285000.000000000000 | London |
| 8389200.000000000000 | Moscow |
| 10500000.000000000000 | Mumbai (Bombay) |
| 8008278.000000000000 | New York |
| 7472000.000000000000 | Peking |
| 9968485.000000000000 | Sao Paulo |
| 9981619.000000000000 | Seoul |
| 9696300.000000000000 | Shanghai |
| 7980230.000000000000 | Tokyo |
| (14 rows) |
| |
| -- Tests for duplicate column aliases |
| with capitals as |
| (select country.code,id,city.name,city.countrycode as code from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from capitals where id < 100; |
| code | id | name | code |
| ------+----+------------------+------ |
| NLD | 5 | Amsterdam | NLD |
| ALB | 34 | Tirana | ALB |
| DZA | 35 | Alger | DZA |
| AND | 55 | Andorra la Vella | AND |
| AIA | 62 | The Valley | AIA |
| ATG | 63 | Saint Johns | ATG |
| AFG | 1 | Kabul | AFG |
| ARE | 65 | Abu Dhabi | ARE |
| ARG | 69 | Buenos Aires | ARG |
| ANT | 33 | Willemstad | ANT |
| ASM | 54 | Fagatogo | ASM |
| AGO | 56 | Luanda | AGO |
| (12 rows) |
| |
| with allofficiallanguages as |
| (select countrylanguage.countrycode,city.countrycode,language from |
| city,countrylanguage where countrylanguage.countrycode = city.countrycode and isofficial = 'True') |
| select * from allofficiallanguages where language like 'A%'; |
| countrycode | countrycode | language |
| -------------+-------------+------------- |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| ARM | ARM | Armenian |
| AZE | AZE | Azerbaijani |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| KWT | KWT | Arabic |
| KWT | KWT | Arabic |
| SOM | SOM | Arabic |
| DJI | DJI | Arabic |
| BHR | BHR | Arabic |
| JOR | JOR | Arabic |
| JOR | JOR | Arabic |
| JOR | JOR | Arabic |
| JOR | JOR | Arabic |
| OMN | OMN | Arabic |
| OMN | OMN | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| TCD | TCD | Arabic |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ARE | ARE | Arabic |
| ARE | ARE | Arabic |
| ARE | ARE | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| YEM | YEM | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| TUN | TUN | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| BOL | BOL | Aimara |
| BOL | BOL | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| ARM | ARM | Armenian |
| IRQ | IRQ | Arabic |
| LBY | LBY | Arabic |
| LBY | LBY | Arabic |
| OMN | OMN | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ALB | ALB | Albaniana |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| YEM | YEM | Arabic |
| YEM | YEM | Arabic |
| LBN | LBN | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| TUN | TUN | Arabic |
| TUN | TUN | Arabic |
| TUN | TUN | Arabic |
| TUN | TUN | Arabic |
| TUN | TUN | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| BOL | BOL | Aimara |
| BOL | BOL | Aimara |
| BOL | BOL | Aimara |
| BOL | BOL | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| DZA | DZA | Arabic |
| ARM | ARM | Armenian |
| AZE | AZE | Azerbaijani |
| AZE | AZE | Azerbaijani |
| AZE | AZE | Azerbaijani |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| IRQ | IRQ | Arabic |
| KWT | KWT | Arabic |
| ESH | ESH | Arabic |
| SOM | SOM | Arabic |
| SOM | SOM | Arabic |
| JOR | JOR | Arabic |
| LBY | LBY | Arabic |
| LBY | LBY | Arabic |
| OMN | OMN | Arabic |
| OMN | OMN | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SAU | SAU | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| SDN | SDN | Arabic |
| TCD | TCD | Arabic |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ZAF | ZAF | Afrikaans |
| ARE | ARE | Arabic |
| ARE | ARE | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| EGY | EGY | Arabic |
| YEM | YEM | Arabic |
| YEM | YEM | Arabic |
| YEM | YEM | Arabic |
| LBN | LBN | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| MAR | MAR | Arabic |
| QAT | QAT | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| SYR | SYR | Arabic |
| TUN | TUN | Arabic |
| TUN | TUN | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| ISR | ISR | Arabic |
| BOL | BOL | Aimara |
| BOL | BOL | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| PER | PER | Aimara |
| (282 rows) |
| |
| with capitals(code,id,name,code) as |
| (select country.code,id,city.name,city.countrycode from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from capitals where id < 100; |
| code | id | name | code |
| ------+----+------------------+------ |
| NLD | 5 | Amsterdam | NLD |
| ALB | 34 | Tirana | ALB |
| DZA | 35 | Alger | DZA |
| AND | 55 | Andorra la Vella | AND |
| AIA | 62 | The Valley | AIA |
| ATG | 63 | Saint Johns | ATG |
| AFG | 1 | Kabul | AFG |
| ARE | 65 | Abu Dhabi | ARE |
| ARG | 69 | Buenos Aires | ARG |
| ANT | 33 | Willemstad | ANT |
| ASM | 54 | Fagatogo | ASM |
| AGO | 56 | Luanda | AGO |
| (12 rows) |
| |
| -- query1 CTE referencing itself |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode |
| HAVING count(*) > (select max(lang_count) from lang_total) |
| ) |
| select count(*) from lang_total; |
| ERROR: relation "lang_total" does not exist |
| LINE 5: HAVING count(*) > (select max(lang_count) from lang_total) |
| ^ |
| DETAIL: There is a WITH item named "lang_total", but it cannot be referenced from this part of the query. |
| HINT: Re-order the WITH items to remove forward references. |
| --query2 CTE forward referencing another CTE |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital), |
| lang_total as |
| ( select count(*) as lang_count,country.code,alleuropeanlanguages.code |
| from country join alleuropeanlanguages on (country.code=alleuropeanlanguages.code and governmentform='Federal Republic') |
| group by country.code,alleuropeanlanguages.code order by country.code), |
| alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from alleuropeanlanguages;-- negative cases with mismatching column list provided for CTEs |
| ERROR: relation "alleuropeanlanguages" does not exist |
| LINE 6: from country join alleuropeanlanguages on (country.code=al... |
| ^ |
| DETAIL: There is a WITH item named "alleuropeanlanguages", but it cannot be referenced from this part of the query. |
| HINT: Re-order the WITH items to remove forward references. |
| --query1 |
| with capitals(code,id) as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from capitals; |
| code | id | name |
| ------+------+----------------------------------- |
| AIA | 62 | The Valley |
| ARE | 65 | Abu Dhabi |
| AUS | 135 | Canberra |
| BHS | 148 | Nassau |
| BHR | 149 | al-Manama |
| BGD | 150 | Dhaka |
| BLZ | 185 | Belmopan |
| BWA | 204 | Gaborone |
| CYM | 553 | George Town |
| CHL | 554 | Santiago de Chile |
| COK | 583 | Avarua |
| CRI | 584 | San Jose |
| DJI | 585 | Djibouti |
| DMA | 586 | Roseau |
| ERI | 652 | Asmara |
| ETH | 756 | Addis Abeba |
| GAB | 902 | Libreville |
| GEO | 905 | Tbilisi |
| GIB | 915 | Gibraltar |
| GLP | 919 | Basse-Terre |
| GUM | 921 | Agaaa |
| HTI | 929 | Port-au-Prince |
| SJM | 938 | Longyearbyen |
| IDN | 939 | Jakarta |
| IND | 1109 | New Delhi |
| IRN | 1380 | Teheran |
| JAM | 1530 | Kingston |
| JPN | 1532 | Tokyo |
| CAF | 1889 | Bangui |
| COM | 2295 | Moroni |
| COD | 2298 | Kinshasa |
| CYP | 2430 | Nicosia |
| LVA | 2434 | Riga |
| LBN | 2438 | Beirut |
| LIE | 2446 | Vaduz |
| MAC | 2454 | Macao |
| MWI | 2462 | Lilongwe |
| MLI | 2482 | Bamako |
| MLT | 2484 | Valletta |
| MAR | 2486 | Rabat |
| MTQ | 2508 | Fort-de-France |
| MRT | 2509 | Nouakchott |
| MCO | 2695 | Monaco-Ville |
| MOZ | 2698 | Maputo |
| NPL | 2729 | Kathmandu |
| NIU | 2805 | Alofi |
| NFK | 2806 | Kingston |
| CIV | 2814 | Yamoussoukro |
| PAK | 2831 | Islamabad |
| PLW | 2881 | Koror |
| PER | 2890 | Lima |
| GNQ | 2972 | Malabo |
| QAT | 2973 | Doha |
| GUF | 3014 | Cayenne |
| SHN | 3063 | Jamestown |
| LCA | 3065 | Castries |
| VCT | 3066 | Kingstown |
| STP | 3172 | Sao Tome |
| SAU | 3173 | Riyadh |
| SEN | 3198 | Dakar |
| SVN | 3212 | Ljubljana |
| SUR | 3243 | Paramaribo |
| SWZ | 3244 | Mbabane |
| SYR | 3250 | Damascus |
| THA | 3320 | Bangkok |
| TKL | 3333 | Fakaofo |
| TON | 3334 | Nukualofa |
| TTO | 3336 | Port-of-Spain |
| TUN | 3349 | Tunis |
| TUR | 3358 | Ankara |
| TKM | 3419 | Ashgabat |
| UKR | 3426 | Kyiv |
| NCL | 3493 | Noumea |
| WLF | 3536 | Mata-Utu |
| EST | 3791 | Tallinn |
| AFG | 1 | Kabul |
| ANT | 33 | Willemstad |
| ALB | 34 | Tirana |
| DZA | 35 | Alger |
| ATG | 63 | Saint Johns |
| ARG | 69 | Buenos Aires |
| BRB | 174 | Bridgetown |
| BEN | 187 | Porto-Novo |
| BTN | 192 | Thimphu |
| BOL | 194 | La Paz |
| GBR | 456 | London |
| VGB | 537 | Road Town |
| BRN | 538 | Bandar Seri Begawan |
| BDI | 552 | Bujumbura |
| DOM | 587 | Santo Domingo de Guzman |
| ECU | 594 | Quito |
| EGY | 608 | Cairo |
| SLV | 645 | San Salvador |
| PHL | 766 | Manila |
| GMB | 904 | Banjul |
| GRD | 916 | Saint Georges |
| GTM | 922 | Ciudad de Guatemala |
| HND | 933 | Tegucigalpa |
| IRQ | 1365 | Baghdad |
| ISR | 1450 | Jerusalem |
| ITA | 1464 | Roma |
| AUT | 1523 | Wien |
| YEM | 1780 | Sanaa |
| CXR | 1791 | Flying Fish Cove |
| YUG | 1792 | Beograd |
| KAZ | 1864 | Astana |
| COG | 2296 | Brazzaville |
| CCK | 2317 | West Island |
| GRC | 2401 | Athenai |
| HRV | 2409 | Zagreb |
| LBR | 2440 | Monrovia |
| LBY | 2441 | Tripoli |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] |
| MKD | 2460 | Skopje |
| MYS | 2464 | Kuala Lumpur |
| MUS | 2511 | Port-Louis |
| FSM | 2689 | Palikir |
| MSR | 2697 | Plymouth |
| NAM | 2726 | Windhoek |
| NRU | 2728 | Yaren |
| NIC | 2734 | Managua |
| NGA | 2754 | Abuja |
| PNG | 2884 | Port Moresby |
| PRY | 2885 | Asuncion |
| PCN | 2912 | Adamstown |
| POL | 2928 | Warszawa |
| FRA | 2974 | Paris |
| REU | 3017 | Saint-Denis |
| ROM | 3018 | Bucuresti |
| SPM | 3067 | Saint-Pierre |
| WSM | 3169 | Apia |
| SMR | 3171 | San Marino |
| SGP | 3208 | Singapore |
| SVK | 3209 | Bratislava |
| LKA | 3217 | Colombo |
| SDN | 3225 | Khartum |
| CHE | 3248 | Bern |
| TGO | 3332 | Lome |
| TCD | 3337 | NDjamena |
| CZE | 3339 | Praha |
| TCA | 3423 | Cockburn Town |
| TUV | 3424 | Funafuti |
| URY | 3492 | Montevideo |
| NZL | 3499 | Wellington |
| VUT | 3537 | Port-Vila |
| VAT | 3538 | Citta del Vaticano |
| VEN | 3539 | Caracas |
| RUS | 3580 | Moscow |
| VNM | 3770 | Hanoi |
| NLD | 5 | Amsterdam |
| ASM | 54 | Fagatogo |
| AND | 55 | Andorra la Vella |
| AGO | 56 | Luanda |
| ARM | 126 | Yerevan |
| ABW | 129 | Oranjestad |
| AZE | 144 | Baku |
| BEL | 179 | Bruxelles [Brussel] |
| BMU | 191 | Hamilton |
| BIH | 201 | Sarajevo |
| BRA | 211 | Brasilia |
| BGR | 539 | Sofija |
| BFA | 549 | Ouagadougou |
| ESP | 653 | Madrid |
| ZAF | 716 | Pretoria |
| FLK | 763 | Stanley |
| FJI | 764 | Suva |
| FRO | 901 | Torshavn |
| GHA | 910 | Accra |
| GRL | 917 | Nuuk |
| GIN | 926 | Conakry |
| GNB | 927 | Bissau |
| GUY | 928 | Georgetown |
| HKG | 937 | Victoria |
| IRL | 1447 | Dublin |
| ISL | 1449 | Reykjavik |
| TMP | 1522 | Dili |
| JOR | 1786 | Amman |
| KHM | 1800 | Phnom Penh |
| CMR | 1804 | Yaounde |
| CAN | 1822 | Ottawa |
| CPV | 1859 | Praia |
| KEN | 1881 | Nairobi |
| CHN | 1891 | Peking |
| KGZ | 2253 | Bishkek |
| KIR | 2256 | Bairiki |
| COL | 2257 | Santafe de Bogota |
| PRK | 2318 | Pyongyang |
| KOR | 2331 | Seoul |
| CUB | 2413 | La Habana |
| KWT | 2429 | Kuwait |
| LAO | 2432 | Vientiane |
| LSO | 2437 | Maseru |
| LTU | 2447 | Vilnius |
| ESH | 2453 | El-Aaiun |
| MDG | 2455 | Antananarivo |
| MDV | 2463 | Male |
| MHL | 2507 | Dalap-Uliga-Darrit |
| MYT | 2514 | Mamoutzou |
| MEX | 2515 | Ciudad de Mexico |
| MDA | 2690 | Chisinau |
| MNG | 2696 | Ulan Bator |
| MMR | 2710 | Rangoon (Yangon) |
| NER | 2738 | Niamey |
| NOR | 2807 | Oslo |
| OMN | 2821 | Masqat |
| PAN | 2882 | Ciudad de Panama |
| MNP | 2913 | Garapan |
| PRT | 2914 | Lisboa |
| PRI | 2919 | San Juan |
| PYF | 3016 | Papeete |
| RWA | 3047 | Kigali |
| SWE | 3048 | Stockholm |
| KNA | 3064 | Basseterre |
| DEU | 3068 | Berlin |
| SLB | 3161 | Honiara |
| ZMB | 3162 | Lusaka |
| SYC | 3206 | Victoria |
| SLE | 3207 | Freetown |
| SOM | 3214 | Mogadishu |
| FIN | 3236 | Helsinki [Helsingfors] |
| TJK | 3261 | Dushanbe |
| TWN | 3263 | Taipei |
| TZA | 3306 | Dodoma |
| DNK | 3315 | Kobenhavn |
| UGA | 3425 | Kampala |
| HUN | 3483 | Budapest |
| UZB | 3503 | Toskent |
| BLR | 3520 | Minsk |
| USA | 3813 | Washington |
| VIR | 4067 | Charlotte Amalie |
| ZWE | 4068 | Harare |
| PSE | 4074 | Gaza |
| (232 rows) |
| |
| --query 2 |
| with lang_total(lang_count,code,countrycode,name) as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| select * from lang_total; |
| ERROR: WITH query "lang_total" has 3 columns available but 4 columns specified |
| LINE 1: with lang_total(lang_count,code,countrycode,name) as |
| ^ |
| -- queries with CTEs using hash joins |
| set enable_nestloop=off; |
| set enable_hashjoin=on; |
| set enable_mergejoin=off; |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| --query 9 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with CTEs using merge joins |
| set enable_nestloop=off; |
| set enable_hashjoin=off; |
| set enable_mergejoin=on; |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| --query 9 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with a single CTE used more than once in different parts of the main query |
| -- query1 |
| -- This kind of query is their only use case for CTE. We don't error, we give correct |
| -- results,use shared scan here and we are good! |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query2 |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query3 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| --query 4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 5 Use CTE more than once in select list , from clause and where clause without correlation |
| with official_languages as |
| ( |
| select country.code,country.name,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and isofficial = 'True' |
| and country.governmentform NOT IN (select 'Commonwealth of the US' UNION ALL select 'Monarchy (Sultanate)' UNION ALL select 'Monarchy') |
| and country.gnp > (select min(gnpold) from country where country.region = 'Western Europe') |
| ) |
| select |
| ( select max(CNT) from (select count(*) CNT,o1.name from official_languages o1, official_languages o2 |
| where o1.code = o2.code group by o1.name) FOO |
| ),* from official_languages; |
| max | code | name | language |
| -----+------+------------------------+------------------ |
| 16 | AFG | Afghanistan | Dari |
| 16 | ARM | Armenia | Armenian |
| 16 | AUT | Austria | German |
| 16 | BMU | Bermuda | English |
| 16 | BRB | Barbados | English |
| 16 | CHE | Switzerland | Romansh |
| 16 | CHE | Switzerland | German |
| 16 | COL | Colombia | Spanish |
| 16 | CRI | Costa Rica | Spanish |
| 16 | CZE | Czech Republic | Czech |
| 16 | ECU | Ecuador | Spanish |
| 16 | EGY | Egypt | Arabic |
| 16 | FIN | Finland | Finnish |
| 16 | GTM | Guatemala | Spanish |
| 16 | GUM | Guam | Chamorro |
| 16 | HND | Honduras | Spanish |
| 16 | HRV | Croatia | Serbo-Croatian |
| 16 | IDN | Indonesia | Malay |
| 16 | IND | India | Hindi |
| 16 | IRQ | Iraq | Arabic |
| 16 | ISR | Israel | Arabic |
| 16 | KAZ | Kazakstan | Kazakh |
| 16 | KOR | South Korea | Korean |
| 16 | LIE | Liechtenstein | German |
| 16 | LKA | Sri Lanka | Tamil |
| 16 | LTU | Lithuania | Lithuanian |
| 16 | MDG | Madagascar | French |
| 16 | MKD | Macedonia | Macedonian |
| 16 | MLT | Malta | English |
| 16 | MTQ | Martinique | French |
| 16 | NCL | New Caledonia | French |
| 16 | NIC | Nicaragua | Spanish |
| 16 | PAN | Panama | Spanish |
| 16 | PHL | Philippines | Pilipino |
| 16 | PRY | Paraguay | Guarani |
| 16 | ROM | Romania | Romanian |
| 16 | ROM | Romania | Romani |
| 16 | RWA | Rwanda | French |
| 16 | SDN | Sudan | Arabic |
| 16 | SEN | Senegal | Wolof |
| 16 | SGP | Singapore | Tamil |
| 16 | SVK | Slovakia | Slovak |
| 16 | SYR | Syria | Arabic |
| 16 | TUR | Turkey | Turkish |
| 16 | TWN | Taiwan | Mandarin Chinese |
| 16 | TZA | Tanzania | Swahili |
| 16 | URY | Uruguay | Spanish |
| 16 | VNM | Vietnam | Vietnamese |
| 16 | ZAF | South Africa | Afrikaans |
| 16 | ANT | Netherlands Antilles | Papiamento |
| 16 | ARE | United Arab Emirates | Arabic |
| 16 | AZE | Azerbaijan | Azerbaijani |
| 16 | BEL | Belgium | French |
| 16 | BIH | Bosnia and Herzegovina | Serbo-Croatian |
| 16 | BLR | Belarus | Belorussian |
| 16 | BLR | Belarus | Russian |
| 16 | BOL | Bolivia | Spanish |
| 16 | BOL | Bolivia | Aimara |
| 16 | BRA | Brazil | Portuguese |
| 16 | CAN | Canada | French |
| 16 | CAN | Canada | English |
| 16 | CHE | Switzerland | French |
| 16 | CHL | Chile | Spanish |
| 16 | COM | Comoros | Comorian |
| 16 | CYP | Cyprus | Greek |
| 16 | DEU | Germany | German |
| 16 | DOM | Dominican Republic | Spanish |
| 16 | DZA | Algeria | Arabic |
| 16 | ESP | Spain | Spanish |
| 16 | HKG | Hong Kong | English |
| 16 | HTI | Haiti | French |
| 16 | HUN | Hungary | Hungarian |
| 16 | IRL | Ireland | English |
| 16 | IRL | Ireland | Irish |
| 16 | IRN | Iran | Persian |
| 16 | ISL | Iceland | Icelandic |
| 16 | ITA | Italy | Italian |
| 16 | JOR | Jordan | Arabic |
| 16 | JPN | Japan | Japanese |
| 16 | KGZ | Kyrgyzstan | Russian |
| 16 | LBY | Libyan Arab Jamahiriya | Arabic |
| 16 | LUX | Luxembourg | Luxembourgish |
| 16 | LUX | Luxembourg | German |
| 16 | LUX | Luxembourg | French |
| 16 | MAR | Morocco | Arabic |
| 16 | MDG | Madagascar | Malagasy |
| 16 | MWI | Malawi | Chichewa |
| 16 | MYS | Malaysia | Malay |
| 16 | NLD | Netherlands | Dutch |
| 16 | NZL | New Zealand | English |
| 16 | PER | Peru | Ketdua |
| 16 | PER | Peru | Aimara |
| 16 | PRT | Portugal | Portuguese |
| 16 | PRY | Paraguay | Spanish |
| 16 | RUS | Russian Federation | Russian |
| 16 | RWA | Rwanda | Rwanda |
| 16 | SGP | Singapore | Malay |
| 16 | SGP | Singapore | Chinese |
| 16 | SLV | El Salvador | Spanish |
| 16 | SWE | Sweden | Swedish |
| 16 | TCD | Chad | Arabic |
| 16 | TGO | Togo | Kabye |
| 16 | TGO | Togo | Ewe |
| 16 | TUN | Tunisia | Arabic |
| 16 | USA | United States | English |
| 16 | UZB | Uzbekistan | Uzbek |
| 16 | ZAF | South Africa | English |
| 16 | ZAF | South Africa | Zulu |
| 16 | AFG | Afghanistan | Pashto |
| 16 | ALB | Albania | Albaniana |
| 16 | AND | Andorra | Catalan |
| 16 | ANT | Netherlands Antilles | Dutch |
| 16 | ARG | Argentina | Spanish |
| 16 | AUS | Australia | English |
| 16 | BEL | Belgium | German |
| 16 | BEL | Belgium | Dutch |
| 16 | BGD | Bangladesh | Bengali |
| 16 | BGR | Bulgaria | Bulgariana |
| 16 | BHR | Bahrain | Arabic |
| 16 | BOL | Bolivia | Ketdua |
| 16 | CHE | Switzerland | Italian |
| 16 | CHN | China | Chinese |
| 16 | CUB | Cuba | Spanish |
| 16 | CYM | Cayman Islands | English |
| 16 | CYP | Cyprus | Turkish |
| 16 | DNK | Denmark | Danish |
| 16 | EST | Estonia | Estonian |
| 16 | FIN | Finland | Swedish |
| 16 | FJI | Fiji Islands | Fijian |
| 16 | FRA | France | French |
| 16 | GBR | United Kingdom | English |
| 16 | GEO | Georgia | Georgiana |
| 16 | GLP | Guadeloupe | French |
| 16 | GRC | Greece | Greek |
| 16 | GUM | Guam | English |
| 16 | ISR | Israel | Hebrew |
| 16 | KGZ | Kyrgyzstan | Kirgiz |
| 16 | KHM | Cambodia | Khmer |
| 16 | KWT | Kuwait | Arabic |
| 16 | LAO | Laos | Lao |
| 16 | LBN | Lebanon | Arabic |
| 16 | LKA | Sri Lanka | Singali |
| 16 | LVA | Latvia | Latvian |
| 16 | MAC | Macao | Portuguese |
| 16 | MDA | Moldova | Romanian |
| 16 | MEX | Mexico | Spanish |
| 16 | MLT | Malta | Maltese |
| 16 | MMR | Myanmar | Burmese |
| 16 | NOR | Norway | Norwegian |
| 16 | NPL | Nepal | Nepali |
| 16 | PAK | Pakistan | Urdu |
| 16 | PER | Peru | Spanish |
| 16 | POL | Poland | Polish |
| 16 | PRK | North Korea | Korean |
| 16 | SVN | Slovenia | Slovene |
| 16 | THA | Thailand | Thai |
| 16 | TJK | Tajikistan | Tadzhik |
| 16 | TKM | Turkmenistan | Turkmenian |
| 16 | UKR | Ukraine | Ukrainian |
| 16 | VEN | Venezuela | Spanish |
| 16 | YEM | Yemen | Arabic |
| 16 | YUG | Yugoslavia | Serbo-Croatian |
| 16 | ZAF | South Africa | Xhosa |
| 16 | ZWE | Zimbabwe | English |
| (164 rows) |
| |
| --query 6 Use CTE in the main query and subqueries within the main query |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select OUTERMOST_FOO.*,bad_headofstates.headofstate from ( |
| select avg(population),region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| order by OUTERMOST_FOO.region,bad_headofstates.headofstate LIMIT 40; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------------------------- |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Fidel Castro Ruz |
| 744388.888888888889 | Caribbean | George W. Bush |
| 744388.888888888889 | Caribbean | Jacques Chirac |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Elisabeth II |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (40 rows) |
| |
| -- query 7 Use CTE in the main query, where clause and having clause |
| with district_population as |
| (select sum(city.population) DISTRICT_POP,count(*) NUM_CITIES,district,countrycode,country.name COUNTRY |
| from city,country |
| where city.countrycode = country.code |
| group by district,countrycode,country.name |
| HAVING (sum(city.population)/count(*)) > ( select avg(population) from city where countrycode = 'CHN')) |
| select sum(FOO.DISTRICT_POP),sum(FOO.NUM_CITIES),COUNTRY,CAPITAL,CAPITAL_POP |
| from |
| ( |
| (select district_population.*,city.name CAPITAL,city.population CAPITAL_POP from |
| district_population,country,city |
| where district_population.countrycode = country.code AND city.id = country.capital |
| AND DISTRICT_POP >= ( select avg(DISTRICT_POP) FROM district_population where district IN (select district from city where countrycode = 'USA') ) |
| order by COUNTRY,district) |
| UNION ALL |
| (select district_population.*,city.name CAPITAL,city.population CAPITAL_POP from |
| district_population,country,city |
| where district_population.countrycode = country.code AND city.id = country.capital |
| AND DISTRICT_POP >= ( select avg(DISTRICT_POP) FROM district_population where district IN (select district from city where countrycode = 'IND') ) |
| order by COUNTRY,district) |
| UNION ALL |
| (select district_population.*,city.name CAPITAL,city.population CAPITAL_POP from |
| district_population,country,city |
| where district_population.countrycode = country.code AND city.id = country.capital |
| AND DISTRICT_POP >= ( select avg(DISTRICT_POP) FROM district_population where district IN (select district from city where countrycode = 'CHN') ) |
| order by COUNTRY,district) |
| ) FOO |
| WHERE FOO.CAPITAL_POP > (select min(DISTRICT_POP) from district_population) |
| group by FOO.COUNTRY,FOO.CAPITAL,FOO.CAPITAL_POP |
| HAVING sum(FOO.DISTRICT_POP) >= ( select avg(DISTRICT_POP) FROM district_population where district IN (select district from city where countrycode = 'AUS') ) |
| AND (sum(FOO.DISTRICT_POP)/sum(FOO.NUM_CITIES)) <= |
| ( select avg(DISTRICT_POP) FROM district_population where district IN (select district from city where countrycode = 'USA' or countrycode = 'IND' or countrycode = 'CHN')) |
| order by FOO.country; |
| sum | sum | country | capital | capital_pop |
| -----------+-----+---------------------------------------+-------------------+------------- |
| 4577018 | 8 | Bangladesh | Dhaka | 3612850 |
| 35875413 | 66 | Brazil | Brasilia | 1969868 |
| 5423156 | 4 | Chile | Santiago de Chile | 4703954 |
| 146743375 | 155 | China | Peking | 7472000 |
| 6260862 | 1 | Colombia | Santafe de Bogota | 6260862 |
| 5064000 | 1 | Congo, The Democratic Republic of the | Kinshasa | 5064000 |
| 10117675 | 2 | Egypt | Cairo | 6789479 |
| 3386667 | 1 | Germany | Berlin | 3386667 |
| 25060392 | 18 | Iran | Teheran | 6758845 |
| 4336000 | 1 | Iraq | Baghdad | 4336000 |
| 48546381 | 84 | Japan | Tokyo | 7980230 |
| 29789325 | 11 | Mexico | Ciudad de Mexico | 8591309 |
| 3095329 | 2 | Morocco | Rabat | 623457 |
| 3361700 | 1 | Myanmar | Rangoon (Yangon) | 3361700 |
| 33060243 | 12 | Pakistan | Islamabad | 524500 |
| 29545923 | 48 | Philippines | Manila | 1581082 |
| 30717000 | 9 | Russian Federation | Moscow | 8389200 |
| 6846000 | 5 | Saudi Arabia | Riyadh | 3324000 |
| 4017733 | 1 | Singapore | Singapore | 4017733 |
| 3962883 | 8 | Spain | Madrid | 2879052 |
| 6320174 | 1 | Thailand | Bangkok | 6320174 |
| 26997078 | 6 | Turkey | Ankara | 3038159 |
| 26874255 | 18 | United States | Washington | 572059 |
| 3980000 | 1 | Vietnam | Hanoi | 1410000 |
| (24 rows) |
| |
| -- query8 Use CTE in the select list and the from clause |
| with official_languages as |
| ( |
| select country.code,country.name,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and isofficial = 'True' |
| ) |
| select |
| ( select max(CNT) from (select count(*) CNT from official_languages) FOO |
| ) |
| ,* from official_languages order by official_languages.code,official_languages.language; |
| max | code | name | language |
| -----+------+--------------------------------------+------------------ |
| 238 | ABW | Aruba | Dutch |
| 238 | AFG | Afghanistan | Dari |
| 238 | AFG | Afghanistan | Pashto |
| 238 | AIA | Anguilla | English |
| 238 | ALB | Albania | Albaniana |
| 238 | AND | Andorra | Catalan |
| 238 | ANT | Netherlands Antilles | Dutch |
| 238 | ANT | Netherlands Antilles | Papiamento |
| 238 | ARE | United Arab Emirates | Arabic |
| 238 | ARG | Argentina | Spanish |
| 238 | ARM | Armenia | Armenian |
| 238 | ASM | American Samoa | English |
| 238 | ASM | American Samoa | Samoan |
| 238 | ATG | Antigua and Barbuda | English |
| 238 | AUS | Australia | English |
| 238 | AUT | Austria | German |
| 238 | AZE | Azerbaijan | Azerbaijani |
| 238 | BDI | Burundi | French |
| 238 | BDI | Burundi | Kirundi |
| 238 | BEL | Belgium | Dutch |
| 238 | BEL | Belgium | French |
| 238 | BEL | Belgium | German |
| 238 | BGD | Bangladesh | Bengali |
| 238 | BGR | Bulgaria | Bulgariana |
| 238 | BHR | Bahrain | Arabic |
| 238 | BIH | Bosnia and Herzegovina | Serbo-Croatian |
| 238 | BLR | Belarus | Belorussian |
| 238 | BLR | Belarus | Russian |
| 238 | BLZ | Belize | English |
| 238 | BMU | Bermuda | English |
| 238 | BOL | Bolivia | Aimara |
| 238 | BOL | Bolivia | Ketdua |
| 238 | BOL | Bolivia | Spanish |
| 238 | BRA | Brazil | Portuguese |
| 238 | BRB | Barbados | English |
| 238 | BRN | Brunei | Malay |
| 238 | BTN | Bhutan | Dzongkha |
| 238 | CAN | Canada | English |
| 238 | CAN | Canada | French |
| 238 | CCK | Cocos (Keeling) Islands | English |
| 238 | CHE | Switzerland | French |
| 238 | CHE | Switzerland | German |
| 238 | CHE | Switzerland | Italian |
| 238 | CHE | Switzerland | Romansh |
| 238 | CHL | Chile | Spanish |
| 238 | CHN | China | Chinese |
| 238 | COK | Cook Islands | Maori |
| 238 | COL | Colombia | Spanish |
| 238 | COM | Comoros | Comorian |
| 238 | CPV | Cape Verde | Portuguese |
| 238 | CRI | Costa Rica | Spanish |
| 238 | CUB | Cuba | Spanish |
| 238 | CXR | Christmas Island | English |
| 238 | CYM | Cayman Islands | English |
| 238 | CYP | Cyprus | Greek |
| 238 | CYP | Cyprus | Turkish |
| 238 | CZE | Czech Republic | Czech |
| 238 | DEU | Germany | German |
| 238 | DJI | Djibouti | Arabic |
| 238 | DNK | Denmark | Danish |
| 238 | DOM | Dominican Republic | Spanish |
| 238 | DZA | Algeria | Arabic |
| 238 | ECU | Ecuador | Spanish |
| 238 | EGY | Egypt | Arabic |
| 238 | ERI | Eritrea | Tigrinja |
| 238 | ESH | Western Sahara | Arabic |
| 238 | ESP | Spain | Spanish |
| 238 | EST | Estonia | Estonian |
| 238 | FIN | Finland | Finnish |
| 238 | FIN | Finland | Swedish |
| 238 | FJI | Fiji Islands | Fijian |
| 238 | FLK | Falkland Islands | English |
| 238 | FRA | France | French |
| 238 | FRO | Faroe Islands | Danish |
| 238 | FRO | Faroe Islands | Faroese |
| 238 | GBR | United Kingdom | English |
| 238 | GEO | Georgia | Georgiana |
| 238 | GIB | Gibraltar | English |
| 238 | GLP | Guadeloupe | French |
| 238 | GNB | Guinea-Bissau | Portuguese |
| 238 | GRC | Greece | Greek |
| 238 | GRL | Greenland | Danish |
| 238 | GRL | Greenland | Greenlandic |
| 238 | GTM | Guatemala | Spanish |
| 238 | GUM | Guam | Chamorro |
| 238 | GUM | Guam | English |
| 238 | HKG | Hong Kong | English |
| 238 | HND | Honduras | Spanish |
| 238 | HRV | Croatia | Serbo-Croatian |
| 238 | HTI | Haiti | French |
| 238 | HUN | Hungary | Hungarian |
| 238 | IDN | Indonesia | Malay |
| 238 | IND | India | Hindi |
| 238 | IRL | Ireland | English |
| 238 | IRL | Ireland | Irish |
| 238 | IRN | Iran | Persian |
| 238 | IRQ | Iraq | Arabic |
| 238 | ISL | Iceland | Icelandic |
| 238 | ISR | Israel | Arabic |
| 238 | ISR | Israel | Hebrew |
| 238 | ITA | Italy | Italian |
| 238 | JOR | Jordan | Arabic |
| 238 | JPN | Japan | Japanese |
| 238 | KAZ | Kazakstan | Kazakh |
| 238 | KGZ | Kyrgyzstan | Kirgiz |
| 238 | KGZ | Kyrgyzstan | Russian |
| 238 | KHM | Cambodia | Khmer |
| 238 | KIR | Kiribati | Kiribati |
| 238 | KNA | Saint Kitts and Nevis | English |
| 238 | KOR | South Korea | Korean |
| 238 | KWT | Kuwait | Arabic |
| 238 | LAO | Laos | Lao |
| 238 | LBN | Lebanon | Arabic |
| 238 | LBY | Libyan Arab Jamahiriya | Arabic |
| 238 | LCA | Saint Lucia | English |
| 238 | LIE | Liechtenstein | German |
| 238 | LKA | Sri Lanka | Singali |
| 238 | LKA | Sri Lanka | Tamil |
| 238 | LSO | Lesotho | English |
| 238 | LSO | Lesotho | Sotho |
| 238 | LTU | Lithuania | Lithuanian |
| 238 | LUX | Luxembourg | French |
| 238 | LUX | Luxembourg | German |
| 238 | LUX | Luxembourg | Luxembourgish |
| 238 | LVA | Latvia | Latvian |
| 238 | MAC | Macao | Portuguese |
| 238 | MAR | Morocco | Arabic |
| 238 | MCO | Monaco | French |
| 238 | MDA | Moldova | Romanian |
| 238 | MDG | Madagascar | French |
| 238 | MDG | Madagascar | Malagasy |
| 238 | MDV | Maldives | Dhivehi |
| 238 | MEX | Mexico | Spanish |
| 238 | MHL | Marshall Islands | English |
| 238 | MHL | Marshall Islands | Marshallese |
| 238 | MKD | Macedonia | Macedonian |
| 238 | MLT | Malta | English |
| 238 | MLT | Malta | Maltese |
| 238 | MMR | Myanmar | Burmese |
| 238 | MNG | Mongolia | Mongolian |
| 238 | MNP | Northern Mariana Islands | English |
| 238 | MSR | Montserrat | English |
| 238 | MTQ | Martinique | French |
| 238 | MWI | Malawi | Chichewa |
| 238 | MYS | Malaysia | Malay |
| 238 | MYT | Mayotte | French |
| 238 | NCL | New Caledonia | French |
| 238 | NFK | Norfolk Island | English |
| 238 | NIC | Nicaragua | Spanish |
| 238 | NIU | Niue | English |
| 238 | NLD | Netherlands | Dutch |
| 238 | NOR | Norway | Norwegian |
| 238 | NPL | Nepal | Nepali |
| 238 | NRU | Nauru | English |
| 238 | NRU | Nauru | Nauru |
| 238 | NZL | New Zealand | English |
| 238 | OMN | Oman | Arabic |
| 238 | PAK | Pakistan | Urdu |
| 238 | PAN | Panama | Spanish |
| 238 | PER | Peru | Aimara |
| 238 | PER | Peru | Ketdua |
| 238 | PER | Peru | Spanish |
| 238 | PHL | Philippines | Pilipino |
| 238 | PLW | Palau | English |
| 238 | PLW | Palau | Palau |
| 238 | POL | Poland | Polish |
| 238 | PRI | Puerto Rico | Spanish |
| 238 | PRK | North Korea | Korean |
| 238 | PRT | Portugal | Portuguese |
| 238 | PRY | Paraguay | Guarani |
| 238 | PRY | Paraguay | Spanish |
| 238 | PYF | French Polynesia | French |
| 238 | QAT | Qatar | Arabic |
| 238 | ROM | Romania | Romani |
| 238 | ROM | Romania | Romanian |
| 238 | RUS | Russian Federation | Russian |
| 238 | RWA | Rwanda | French |
| 238 | RWA | Rwanda | Rwanda |
| 238 | SAU | Saudi Arabia | Arabic |
| 238 | SDN | Sudan | Arabic |
| 238 | SEN | Senegal | Wolof |
| 238 | SGP | Singapore | Chinese |
| 238 | SGP | Singapore | Malay |
| 238 | SGP | Singapore | Tamil |
| 238 | SHN | Saint Helena | English |
| 238 | SJM | Svalbard and Jan Mayen | Norwegian |
| 238 | SLV | El Salvador | Spanish |
| 238 | SMR | San Marino | Italian |
| 238 | SOM | Somalia | Arabic |
| 238 | SOM | Somalia | Somali |
| 238 | SPM | Saint Pierre and Miquelon | French |
| 238 | SVK | Slovakia | Slovak |
| 238 | SVN | Slovenia | Slovene |
| 238 | SWE | Sweden | Swedish |
| 238 | SWZ | Swaziland | Swazi |
| 238 | SYC | Seychelles | English |
| 238 | SYC | Seychelles | French |
| 238 | SYR | Syria | Arabic |
| 238 | TCA | Turks and Caicos Islands | English |
| 238 | TCD | Chad | Arabic |
| 238 | TGO | Togo | Ewe |
| 238 | TGO | Togo | Kabye |
| 238 | THA | Thailand | Thai |
| 238 | TJK | Tajikistan | Tadzhik |
| 238 | TKL | Tokelau | English |
| 238 | TKM | Turkmenistan | Turkmenian |
| 238 | TMP | East Timor | Portuguese |
| 238 | TON | Tonga | English |
| 238 | TON | Tonga | Tongan |
| 238 | TUN | Tunisia | Arabic |
| 238 | TUR | Turkey | Turkish |
| 238 | TUV | Tuvalu | English |
| 238 | TUV | Tuvalu | Tuvalu |
| 238 | TWN | Taiwan | Mandarin Chinese |
| 238 | TZA | Tanzania | Swahili |
| 238 | UKR | Ukraine | Ukrainian |
| 238 | UMI | United States Minor Outlying Islands | English |
| 238 | URY | Uruguay | Spanish |
| 238 | USA | United States | English |
| 238 | UZB | Uzbekistan | Uzbek |
| 238 | VAT | Holy See (Vatican City State) | Italian |
| 238 | VCT | Saint Vincent and the Grenadines | English |
| 238 | VEN | Venezuela | Spanish |
| 238 | VGB | Virgin Islands, British | English |
| 238 | VIR | Virgin Islands, U.S. | English |
| 238 | VNM | Vietnam | Vietnamese |
| 238 | VUT | Vanuatu | Bislama |
| 238 | VUT | Vanuatu | English |
| 238 | VUT | Vanuatu | French |
| 238 | WSM | Samoa | English |
| 238 | WSM | Samoa | Samoan |
| 238 | YEM | Yemen | Arabic |
| 238 | YUG | Yugoslavia | Serbo-Croatian |
| 238 | ZAF | South Africa | Afrikaans |
| 238 | ZAF | South Africa | English |
| 238 | ZAF | South Africa | Xhosa |
| 238 | ZAF | South Africa | Zulu |
| 238 | ZWE | Zimbabwe | English |
| (238 rows) |
| |
| -- queries with CTEs using index scans |
| set enable_seqscan=off; |
| set enable_indexscan=on; |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- some queries with merge joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=off; |
| set enable_mergejoin=on; |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| -- some queries with hash joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=on; |
| set enable_mergejoin=off; |
| --query 9 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with CTEs using index scans on bitmap indexes |
| \echo --start_ignore |
| --start_ignore |
| Drop index bitmap_city_countrycode; |
| ERROR: index "bitmap_city_countrycode" does not exist |
| Drop index bitmap_country_gf; |
| ERROR: index "bitmap_country_gf" does not exist |
| Drop index bitmap_country_region; |
| ERROR: index "bitmap_country_region" does not exist |
| Drop index bitmap_country_continent; |
| ERROR: index "bitmap_country_continent" does not exist |
| Drop index bitmap_countrylanguage_countrycode; |
| ERROR: index "bitmap_countrylanguage_countrycode" does not exist |
| \echo --end_ignore |
| --end_ignore |
| create index bitmap_city_countrycode on city using bitmap(countrycode); |
| create index bitmap_country_gf on country using bitmap(governmentform); |
| create index bitmap_country_region on country using bitmap(region); |
| create index bitmap_country_continent on country using bitmap(continent); |
| create index bitmap_countrylanguage_countrycode on countrylanguage using bitmap(countrycode); |
| set enable_seqscan=off; |
| set enable_indexscan=on; |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- some queries with merge joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=off; |
| set enable_mergejoin=on; |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query8 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| -- some queries with hash joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=on; |
| set enable_mergejoin=off; |
| --query 9 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with CTEs using hash aggs |
| set enable_groupagg=off; |
| set enable_hashagg=on; |
| --query1 |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select * from |
| capitals,countrylanguage |
| where capitals.code = countrylanguage.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| select lang_count,country.code,country.name,country.continent,country.region,country.population |
| from country left outer join lang_total |
| on (lang_total.code = country.code) |
| where country.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Monarchy') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country.code,country.name |
| from |
| country,countrylanguage |
| where country.code=countrylanguage.countrycode group by country.code,country.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select diversecountries.name,city.name,diversecountries.CNT |
| from diversecountries,city where city.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Southeast Asia' |
| and country.continent = 'Asia' |
| |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Eastern Asia' |
| and country.continent = 'Asia' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.gnp < 10000 |
| and country.region = 'Middle East' |
| and country.continent = 'Asia' |
| ) FOO, countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,countrylanguage.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country.code from countrylanguage,country |
| where countrylanguage.countrycode=country.code |
| and country.continent = 'Asia' |
| and country.region = 'Southern and Central Asia' |
| group by country.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'North America' |
| UNION ALL |
| select country.code,country.name COUNTRY,city.name CAPITAL,country.headofstate |
| from country,city |
| where country.capital = city.id |
| and country.continent = 'South America' |
| ) FOO,countrylanguage |
| where FOO.code = countrylanguage.countrycode |
| group by FOO.code,FOO.COUNTRY,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country |
| where somecheapasiandiversecountries.code = country.code |
| and country.gnp >= country.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY; |
| code | country | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country.name as COUNTRY,country.code,city.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city.population >= 0.5 * country.population) then country.population else city.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country.region |
| from country,city |
| where governmentform != 'Constitutional Monarchy' |
| and country.capital = city.id |
| and indepyear > 0 |
| group by country.region) AGG1 |
| ,country,city |
| where country.capital = city.id |
| and country.region = AGG1.region |
| ) |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage |
| where fact.code = countrylanguage.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY,e1.language; |
| code | country | capital | language | isofficial | percentage | code | country | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select sum(FOO.CITY_CNT) REGION_CITY_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'Asia' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > 1 |
| and country.continent = 'North America' |
| UNION ALL |
| select allcountrystats.code,allcountrystats.name COUNTRY,CITY_CNT,LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and CITY_CNT/LANG_CNT > (select max(CITY_CNT/LANG_CNT) from allcountrystats,country where allcountrystats.code = country.code AND country.continent='Europe') |
| ) FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_cnt | region_lang_cnt | region |
| -----------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| --query 9 |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city.name CAPITAL_CITY,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country |
| ON (d1.code = country.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city |
| ON(d1.capital = city.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with CTEs on AO tables |
| DROP TABLE IF EXISTS CITY_AO; |
| NOTICE: table "city_ao" does not exist, skipping |
| CREATE TABLE CITY_AO ( |
| id integer NOT NULL, |
| name text NOT NULL, |
| countrycode character(3) NOT NULL, |
| district text NOT NULL, |
| population integer NOT NULL |
| ) with (appendonly=true) distributed by(id); |
| DROP TABLE IF EXISTS country_ao; |
| NOTICE: table "country_ao" does not exist, skipping |
| CREATE TABLE country_ao ( |
| code character(3) NOT NULL, |
| name text NOT NULL, |
| continent text NOT NULL, |
| region text NOT NULL, |
| surfacearea numeric(10,2) NOT NULL, |
| indepyear smallint, |
| population integer NOT NULL, |
| lifeexpectancy real, |
| gnp numeric(10,2), |
| gnpold numeric(10,2), |
| localname text NOT NULL, |
| governmentform text NOT NULL, |
| headofstate text, |
| capital integer, |
| code2 character(2) NOT NULL |
| ) with (appendonly=true) distributed by (code); |
| DROP TABLE IF EXISTS countrylanguage_ao; |
| NOTICE: table "countrylanguage_ao" does not exist, skipping |
| CREATE TABLE countrylanguage_ao ( |
| countrycode character(3) NOT NULL, |
| "language" text NOT NULL, |
| isofficial boolean NOT NULL, |
| percentage real NOT NULL |
| ) with (appendonly=true) distributed by (countrycode,language); |
| create index bitmap_city_ao_countrycode on city_ao using bitmap(countrycode); |
| create index bitmap_country_ao_gf on country_ao using bitmap(governmentform); |
| create index bitmap_country_ao_region on country_ao using bitmap(region); |
| create index bitmap_country_ao_continent on country_ao using bitmap(continent); |
| create index bitmap_countrylanguage_ao_countrycode on countrylanguage_ao using bitmap(countrycode); |
| INSERT INTO CITY_AO SELECT * FROM CITY; |
| INSERT INTO COUNTRY_AO SELECT * FROM COUNTRY; |
| INSERT INTO COUNTRYLANGUAGE_AO SELECT * FROM COUNTRYLANGUAGE; |
| ANALYZE CITY_AO; |
| ANALYZE COUNTRY_AO; |
| ANALYZE COUNTRYLANGUAGE_AO; |
| set enable_seqscan=off; |
| set enable_indexscan=on; |
| --query1 |
| with capitals as |
| (select country_ao.code,id,city_ao.name from city_ao,country_ao |
| where city_ao.countrycode = country_ao.code AND city_ao.id = country_ao.capital) |
| select * from |
| capitals,countrylanguage_ao |
| where capitals.code = countrylanguage_ao.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage_ao.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country_ao.code,countrylanguage_ao.countrycode |
| from country_ao join countrylanguage_ao on (country_ao.code=countrylanguage_ao.countrycode and governmentform='Federal Republic') |
| group by country_ao.code,countrylanguage_ao.countrycode order by country_ao.code) |
| |
| select lang_count,country_ao.code,country_ao.name,country_ao.continent,country_ao.region,country_ao.population |
| from country_ao left outer join lang_total |
| on (lang_total.code = country_ao.code) |
| where country_ao.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country_ao.code,countrylanguage_ao.countrycode |
| from country_ao join countrylanguage_ao on (country_ao.code=countrylanguage_ao.countrycode and governmentform='Federal Republic') |
| group by country_ao.code,countrylanguage_ao.countrycode order by country_ao.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country_ao.code,countrylanguage_ao.countrycode |
| from country_ao join countrylanguage_ao on (country_ao.code=countrylanguage_ao.countrycode and governmentform='Monarchy') |
| group by country_ao.code,countrylanguage_ao.countrycode order by country_ao.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country_ao.code,country_ao.name |
| from |
| country_ao,countrylanguage_ao |
| where country_ao.code=countrylanguage_ao.countrycode group by country_ao.code,country_ao.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country_ao.code,country_ao.name,country_ao.capital,d.CNT |
| from country_ao, |
| (select countrylanguage_ao.countrycode,count(*) as CNT from countrylanguage_ao group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country_ao.code and country_ao.gnp > 100000) |
| select diversecountries.name,city_ao.name,diversecountries.CNT |
| from diversecountries,city_ao where city_ao.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- some queries with merge joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=off; |
| set enable_mergejoin=on; |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY_AO,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country_ao.code,country_ao.name COUNTRY_AO,city_ao.name CAPITAL,country_ao.headofstate |
| from country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.gnp < 10000 |
| and country_ao.region = 'Southeast Asia' |
| and country_ao.continent = 'Asia' |
| |
| UNION ALL |
| select country_ao.code,country_ao.name COUNTRY_AO,city_ao.name CAPITAL,country_ao.headofstate |
| from country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.gnp < 10000 |
| and country_ao.region = 'Eastern Asia' |
| and country_ao.continent = 'Asia' |
| UNION ALL |
| select country_ao.code,country_ao.name COUNTRY_AO,city_ao.name CAPITAL,country_ao.headofstate |
| from country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.gnp < 10000 |
| and country_ao.region = 'Middle East' |
| and country_ao.continent = 'Asia' |
| ) FOO, countrylanguage_ao |
| where FOO.code = countrylanguage_ao.countrycode |
| group by FOO.code,FOO.COUNTRY_AO,FOO.CAPITAL,FOO.headofstate,countrylanguage_ao.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country_ao.code from countrylanguage_ao,country_ao |
| where countrylanguage_ao.countrycode=country_ao.code |
| and country_ao.continent = 'Asia' |
| and country_ao.region = 'Southern and Central Asia' |
| group by country_ao.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY_AO,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country_ao.code,country_ao.name COUNTRY_AO,city_ao.name CAPITAL,country_ao.headofstate |
| from country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.continent = 'North America' |
| UNION ALL |
| select country_ao.code,country_ao.name COUNTRY_AO,city_ao.name CAPITAL,country_ao.headofstate |
| from country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.continent = 'South America' |
| ) FOO,countrylanguage_ao |
| where FOO.code = countrylanguage_ao.countrycode |
| group by FOO.code,FOO.COUNTRY_AO,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country_ao |
| where somecheapasiandiversecountries.code = country_ao.code |
| and country_ao.gnp >= country_ao.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY_AO; |
| code | country_ao | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country_ao.name as COUNTRY_AO,country_ao.code,city_ao.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city_ao.population >= 0.5 * country_ao.population) then country_ao.population else city_ao.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country_ao.region |
| from country_ao,city_ao |
| where governmentform != 'Constitutional Monarchy' |
| and country_ao.capital = city_ao.id |
| and indepyear > 0 |
| group by country_ao.region) AGG1 |
| ,country_ao,city_ao |
| where country_ao.capital = city_ao.id |
| and country_ao.region = AGG1.region |
| ) |
| |
| select code,COUNTRY_AO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_ao |
| where fact.code = countrylanguage_ao.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| |
| UNION ALL |
| |
| select code,COUNTRY_AO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_ao |
| where fact.code = countrylanguage_ao.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| |
| UNION ALL |
| |
| select code,COUNTRY_AO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_ao |
| where fact.code = countrylanguage_ao.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country_ao.code,country_ao.name COUNTRY_AO, city_ao.name CAPITAL, language, isofficial, percentage |
| FROM country_ao,city_ao,countrylanguage_ao |
| WHERE country_ao.code = countrylanguage_ao.countrycode |
| and country_ao.capital = city_ao.id |
| and country_ao.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY_AO,e1.language; |
| code | country_ao | capital | language | isofficial | percentage | code | country_ao | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountry_aostats as |
| ( select country_ao.code,country_ao.name,count(distinct city_ao.id) CITY_AO_CNT, |
| count(distinct countrylanguage_ao.language) LANG_CNT |
| from country_ao,city_ao,countrylanguage_ao |
| where country_ao.code = city_ao.countrycode |
| and country_ao.code = countrylanguage_ao.countrycode |
| group by country_ao.code,country_ao.name |
| ) |
| select sum(FOO.CITY_AO_CNT) REGION_CITY_AO_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountry_aostats.code,allcountry_aostats.name COUNTRY_AO,CITY_AO_CNT,LANG_CNT,country_ao.region,city_ao.name CAPITAL |
| from allcountry_aostats,country_ao,city_ao |
| where allcountry_aostats.code = country_ao.code |
| and country_ao.capital = city_ao.id |
| and CITY_AO_CNT/LANG_CNT > 1 |
| and country_ao.continent = 'Asia' |
| UNION ALL |
| select allcountry_aostats.code,allcountry_aostats.name COUNTRY_AO,CITY_AO_CNT,LANG_CNT,country_ao.region,city_ao.name CAPITAL |
| from allcountry_aostats,country_ao,city_ao |
| where allcountry_aostats.code = country_ao.code |
| and country_ao.capital = city_ao.id |
| and CITY_AO_CNT/LANG_CNT > 1 |
| and country_ao.continent = 'North America' |
| UNION ALL |
| select allcountry_aostats.code,allcountry_aostats.name COUNTRY_AO,CITY_AO_CNT,LANG_CNT,country_ao.region,city_ao.name CAPITAL |
| from allcountry_aostats,country_ao,city_ao |
| where allcountry_aostats.code = country_ao.code |
| and country_ao.capital = city_ao.id |
| and CITY_AO_CNT/LANG_CNT > (select max(CITY_AO_CNT/LANG_CNT) from allcountry_aostats,country_ao where allcountry_aostats.code = country_ao.code AND country_ao.continent='Europe') |
| ) FOO |
| ,allcountry_aostats,country_ao |
| WHERE allcountry_aostats.code = country_ao.code |
| and FOO.region = country_ao.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_ao_cnt | region_lang_cnt | region |
| --------------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| -- some queries with hash joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=on; |
| set enable_mergejoin=off; |
| --query 9 |
| with diversecountries as |
| (select country_ao.code,country_ao.name,country_ao.capital,d.CNT |
| from country_ao, |
| (select countrylanguage_ao.countrycode,count(*) as CNT from countrylanguage_ao group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country_ao.code and country_ao.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city_ao.name CAPITAL_CITY_AO,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country_ao |
| ON (d1.code = country_ao.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country_ao.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city_ao |
| ON(d1.capital = city_ao.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city_ao | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country_ao |
| group by region |
| ) FOO,countrylanguage_ao,country_ao |
| where |
| country_ao.code = countrylanguage_ao.countrycode |
| and FOO.region = country_ao.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country_ao |
| group by region |
| ) FOO,countrylanguage_ao,country_ao |
| where |
| country_ao.code = countrylanguage_ao.countrycode |
| and FOO.region = country_ao.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountry_aostats as |
| ( select country_ao.code,country_ao.name,count(distinct city_ao.id) CITY_AO_CNT, |
| count(distinct countrylanguage_ao.language) LANG_CNT |
| from country_ao,city_ao,countrylanguage_ao |
| where country_ao.code = city_ao.countrycode |
| and country_ao.code = countrylanguage_ao.countrycode |
| group by country_ao.code,country_ao.name |
| ) |
| select allcountry_aostats.CITY_AO_CNT,allcountry_aostats.LANG_CNT,allcountry_aostats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_aostats,country_ao |
| where longlivingregions.region = denseregions.region and allcountry_aostats.code = country_ao.code and country_ao.region = longlivingregions.region |
| and country_ao.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountry_aostats.CITY_AO_CNT,allcountry_aostats.LANG_CNT,allcountry_aostats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_aostats,country_ao |
| where longlivingregions.region = denseregions.region and allcountry_aostats.code = country_ao.code and country_ao.region = longlivingregions.region |
| and country_ao.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountry_aostats.CITY_AO_CNT,allcountry_aostats.LANG_CNT,allcountry_aostats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_aostats,country_ao |
| where longlivingregions.region = denseregions.region and allcountry_aostats.code = country_ao.code and country_ao.region = longlivingregions.region |
| and country_ao.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_ao_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| -------------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcity_aostats as |
| ( select city_ao.name CITY_AO,city_ao.id,country_ao.name COUNTRY_AO,city_ao.district,city_ao.population as CITY_AO_POP |
| from |
| city_ao,country_ao |
| where city_ao.countrycode = country_ao.code |
| ), |
| alldistrictstats as |
| ( select allcity_aostats.district,allcity_aostats.COUNTRY_AO,sum(CITY_AO_POP) DISTRICT_POP, |
| count(CITY_AO) as D_CITY_AO_CNT |
| from allcity_aostats |
| group by allcity_aostats.district,allcity_aostats.COUNTRY_AO |
| order by district,COUNTRY_AO |
| ), |
| allcountry_aostats as |
| ( select alldistrictstats.COUNTRY_AO,country_ao.code,sum(D_CITY_AO_CNT) C_CITY_AO_CNT, |
| count(distinct countrylanguage_ao.language) C_LANG_CNT |
| from alldistrictstats,country_ao,countrylanguage_ao |
| where alldistrictstats.COUNTRY_AO = country_ao.name |
| and country_ao.code = countrylanguage_ao.countrycode |
| group by COUNTRY_AO,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_AO_CNT) REGION_CITY_AO_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountry_aostats.code,allcountry_aostats.COUNTRY_AO,C_CITY_AO_CNT,C_LANG_CNT,country_ao.region,city_ao.name CAPITAL |
| from allcountry_aostats,country_ao,city_ao |
| where allcountry_aostats.code = country_ao.code |
| and country_ao.capital = city_ao.id |
| and C_CITY_AO_CNT/C_LANG_CNT > 1 |
| and country_ao.continent = 'Asia') FOO |
| ,allcountry_aostats,country_ao |
| WHERE allcountry_aostats.code = country_ao.code |
| and FOO.region = country_ao.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_AO_CNT as CITY_AO_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_AO_CNT) CITY_AO_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountry_aostats.code,allcountry_aostats.COUNTRY_AO,C_CITY_AO_CNT,C_LANG_CNT,country_ao.region,allcity_aostats.CITY_AO CAPITAL |
| from allcountry_aostats,country_ao,allcity_aostats |
| where allcountry_aostats.code = country_ao.code |
| and country_ao.capital = allcity_aostats.id |
| and C_CITY_AO_CNT/C_LANG_CNT > 1 |
| and country_ao.continent = 'Europe') FOO |
| ,allcountry_aostats,country_ao |
| WHERE allcountry_aostats.code = country_ao.code |
| and FOO.region = country_ao.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_ao_cnt | lang_cnt | identifier |
| -------------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries with CTEs on CO tables |
| DROP TABLE IF EXISTS CITY_CO; |
| NOTICE: table "city_co" does not exist, skipping |
| CREATE TABLE CITY_CO ( |
| id integer NOT NULL, |
| name text NOT NULL, |
| countrycode character(3) NOT NULL, |
| district text NOT NULL, |
| population integer NOT NULL |
| ) with (appendonly=true,orientation=column) distributed by(id); |
| DROP TABLE IF EXISTS country_co; |
| NOTICE: table "country_co" does not exist, skipping |
| CREATE TABLE country_co ( |
| code character(3) NOT NULL, |
| name text NOT NULL, |
| continent text NOT NULL, |
| region text NOT NULL, |
| surfacearea numeric(10,2) NOT NULL, |
| indepyear smallint, |
| population integer NOT NULL, |
| lifeexpectancy real, |
| gnp numeric(10,2), |
| gnpold numeric(10,2), |
| localname text NOT NULL, |
| governmentform text NOT NULL, |
| headofstate text, |
| capital integer, |
| code2 character(2) NOT NULL |
| ) with (appendonly=true,orientation=column) distributed by (code); |
| DROP TABLE IF EXISTS countrylanguage_co; |
| NOTICE: table "countrylanguage_co" does not exist, skipping |
| CREATE TABLE countrylanguage_co ( |
| countrycode character(3) NOT NULL, |
| "language" text NOT NULL, |
| isofficial boolean NOT NULL, |
| percentage real NOT NULL |
| ) with (appendonly=true,orientation=column) distributed by (countrycode,language); |
| create index bitmap_city_co_countrycode on city_co using bitmap(countrycode); |
| create index bitmap_country_co_gf on country_co using bitmap(governmentform); |
| create index bitmap_country_co_region on country_co using bitmap(region); |
| create index bitmap_country_co_continent on country_co using bitmap(continent); |
| create index bitmap_countrylanguage_co_countrycode on countrylanguage_co using bitmap(countrycode); |
| INSERT INTO CITY_CO SELECT * FROM CITY; |
| INSERT INTO COUNTRY_CO SELECT * FROM COUNTRY; |
| INSERT INTO COUNTRYLANGUAGE_CO SELECT * FROM COUNTRYLANGUAGE; |
| ANALYZE CITY_CO; |
| ANALYZE COUNTRY_CO; |
| ANALYZE COUNTRYLANGUAGE_CO; |
| set enable_seqscan=off; |
| set enable_indexscan=on; |
| --query1 |
| with capitals as |
| (select country_co.code,id,city_co.name from city_co,country_co |
| where city_co.countrycode = country_co.code AND city_co.id = country_co.capital) |
| select * from |
| capitals,countrylanguage_co |
| where capitals.code = countrylanguage_co.countrycode and isofficial='true' |
| order by capitals.code,countrylanguage_co.language; |
| code | id | name | countrycode | language | isofficial | percentage |
| ------+------+-----------------------------------+-------------+------------------+------------+------------ |
| ABW | 129 | Oranjestad | ABW | Dutch | t | 5.3 |
| AFG | 1 | Kabul | AFG | Dari | t | 32.1 |
| AFG | 1 | Kabul | AFG | Pashto | t | 52.4 |
| AIA | 62 | The Valley | AIA | English | t | 0 |
| ALB | 34 | Tirana | ALB | Albaniana | t | 97.9 |
| AND | 55 | Andorra la Vella | AND | Catalan | t | 32.3 |
| ANT | 33 | Willemstad | ANT | Dutch | t | 0 |
| ANT | 33 | Willemstad | ANT | Papiamento | t | 86.2 |
| ARE | 65 | Abu Dhabi | ARE | Arabic | t | 42 |
| ARG | 69 | Buenos Aires | ARG | Spanish | t | 96.8 |
| ARM | 126 | Yerevan | ARM | Armenian | t | 93.4 |
| ASM | 54 | Fagatogo | ASM | English | t | 3.1 |
| ASM | 54 | Fagatogo | ASM | Samoan | t | 90.6 |
| ATG | 63 | Saint Johns | ATG | English | t | 0 |
| AUS | 135 | Canberra | AUS | English | t | 81.2 |
| AUT | 1523 | Wien | AUT | German | t | 92 |
| AZE | 144 | Baku | AZE | Azerbaijani | t | 89 |
| BDI | 552 | Bujumbura | BDI | French | t | 0 |
| BDI | 552 | Bujumbura | BDI | Kirundi | t | 98.1 |
| BEL | 179 | Bruxelles [Brussel] | BEL | Dutch | t | 59.2 |
| BEL | 179 | Bruxelles [Brussel] | BEL | French | t | 32.6 |
| BEL | 179 | Bruxelles [Brussel] | BEL | German | t | 1 |
| BGD | 150 | Dhaka | BGD | Bengali | t | 97.7 |
| BGR | 539 | Sofija | BGR | Bulgariana | t | 83.2 |
| BHR | 149 | al-Manama | BHR | Arabic | t | 67.7 |
| BIH | 201 | Sarajevo | BIH | Serbo-Croatian | t | 99.2 |
| BLR | 3520 | Minsk | BLR | Belorussian | t | 65.6 |
| BLR | 3520 | Minsk | BLR | Russian | t | 32 |
| BLZ | 185 | Belmopan | BLZ | English | t | 50.8 |
| BMU | 191 | Hamilton | BMU | English | t | 100 |
| BOL | 194 | La Paz | BOL | Aimara | t | 3.2 |
| BOL | 194 | La Paz | BOL | Ketdua | t | 8.1 |
| BOL | 194 | La Paz | BOL | Spanish | t | 87.7 |
| BRA | 211 | Brasilia | BRA | Portuguese | t | 97.5 |
| BRB | 174 | Bridgetown | BRB | English | t | 0 |
| BRN | 538 | Bandar Seri Begawan | BRN | Malay | t | 45.5 |
| BTN | 192 | Thimphu | BTN | Dzongkha | t | 50 |
| CAN | 1822 | Ottawa | CAN | English | t | 60.4 |
| CAN | 1822 | Ottawa | CAN | French | t | 23.4 |
| CCK | 2317 | West Island | CCK | English | t | 0 |
| CHE | 3248 | Bern | CHE | French | t | 19.2 |
| CHE | 3248 | Bern | CHE | German | t | 63.6 |
| CHE | 3248 | Bern | CHE | Italian | t | 7.7 |
| CHE | 3248 | Bern | CHE | Romansh | t | 0.6 |
| CHL | 554 | Santiago de Chile | CHL | Spanish | t | 89.7 |
| CHN | 1891 | Peking | CHN | Chinese | t | 92 |
| COK | 583 | Avarua | COK | Maori | t | 0 |
| COL | 2257 | Santafe de Bogota | COL | Spanish | t | 99 |
| COM | 2295 | Moroni | COM | Comorian | t | 75 |
| CPV | 1859 | Praia | CPV | Portuguese | t | 0 |
| CRI | 584 | San Jose | CRI | Spanish | t | 97.5 |
| CUB | 2413 | La Habana | CUB | Spanish | t | 100 |
| CXR | 1791 | Flying Fish Cove | CXR | English | t | 0 |
| CYM | 553 | George Town | CYM | English | t | 0 |
| CYP | 2430 | Nicosia | CYP | Greek | t | 74.1 |
| CYP | 2430 | Nicosia | CYP | Turkish | t | 22.4 |
| CZE | 3339 | Praha | CZE | Czech | t | 81.2 |
| DEU | 3068 | Berlin | DEU | German | t | 91.3 |
| DJI | 585 | Djibouti | DJI | Arabic | t | 10.6 |
| DNK | 3315 | Kobenhavn | DNK | Danish | t | 93.5 |
| DOM | 587 | Santo Domingo de Guzman | DOM | Spanish | t | 98 |
| DZA | 35 | Alger | DZA | Arabic | t | 86 |
| ECU | 594 | Quito | ECU | Spanish | t | 93 |
| EGY | 608 | Cairo | EGY | Arabic | t | 98.8 |
| ERI | 652 | Asmara | ERI | Tigrinja | t | 49.1 |
| ESH | 2453 | El-Aaiun | ESH | Arabic | t | 100 |
| ESP | 653 | Madrid | ESP | Spanish | t | 74.4 |
| EST | 3791 | Tallinn | EST | Estonian | t | 65.3 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Finnish | t | 92.7 |
| FIN | 3236 | Helsinki [Helsingfors] | FIN | Swedish | t | 5.7 |
| FJI | 764 | Suva | FJI | Fijian | t | 50.8 |
| FLK | 763 | Stanley | FLK | English | t | 0 |
| FRA | 2974 | Paris | FRA | French | t | 93.6 |
| FRO | 901 | Torshavn | FRO | Danish | t | 0 |
| FRO | 901 | Torshavn | FRO | Faroese | t | 100 |
| GBR | 456 | London | GBR | English | t | 97.3 |
| GEO | 905 | Tbilisi | GEO | Georgiana | t | 71.7 |
| GIB | 915 | Gibraltar | GIB | English | t | 88.9 |
| GLP | 919 | Basse-Terre | GLP | French | t | 0 |
| GNB | 927 | Bissau | GNB | Portuguese | t | 8.1 |
| GRC | 2401 | Athenai | GRC | Greek | t | 98.5 |
| GRL | 917 | Nuuk | GRL | Danish | t | 12.5 |
| GRL | 917 | Nuuk | GRL | Greenlandic | t | 87.5 |
| GTM | 922 | Ciudad de Guatemala | GTM | Spanish | t | 64.7 |
| GUM | 921 | Agaaa | GUM | Chamorro | t | 29.6 |
| GUM | 921 | Agaaa | GUM | English | t | 37.5 |
| HKG | 937 | Victoria | HKG | English | t | 2.2 |
| HND | 933 | Tegucigalpa | HND | Spanish | t | 97.2 |
| HRV | 2409 | Zagreb | HRV | Serbo-Croatian | t | 95.9 |
| HTI | 929 | Port-au-Prince | HTI | French | t | 0 |
| HUN | 3483 | Budapest | HUN | Hungarian | t | 98.5 |
| IDN | 939 | Jakarta | IDN | Malay | t | 12.1 |
| IND | 1109 | New Delhi | IND | Hindi | t | 39.9 |
| IRL | 1447 | Dublin | IRL | English | t | 98.4 |
| IRL | 1447 | Dublin | IRL | Irish | t | 1.6 |
| IRN | 1380 | Teheran | IRN | Persian | t | 45.7 |
| IRQ | 1365 | Baghdad | IRQ | Arabic | t | 77.2 |
| ISL | 1449 | Reykjavik | ISL | Icelandic | t | 95.7 |
| ISR | 1450 | Jerusalem | ISR | Arabic | t | 18 |
| ISR | 1450 | Jerusalem | ISR | Hebrew | t | 63.1 |
| ITA | 1464 | Roma | ITA | Italian | t | 94.1 |
| JOR | 1786 | Amman | JOR | Arabic | t | 97.9 |
| JPN | 1532 | Tokyo | JPN | Japanese | t | 99.1 |
| KAZ | 1864 | Astana | KAZ | Kazakh | t | 46 |
| KGZ | 2253 | Bishkek | KGZ | Kirgiz | t | 59.7 |
| KGZ | 2253 | Bishkek | KGZ | Russian | t | 16.2 |
| KHM | 1800 | Phnom Penh | KHM | Khmer | t | 88.6 |
| KIR | 2256 | Bairiki | KIR | Kiribati | t | 98.9 |
| KNA | 3064 | Basseterre | KNA | English | t | 0 |
| KOR | 2331 | Seoul | KOR | Korean | t | 99.9 |
| KWT | 2429 | Kuwait | KWT | Arabic | t | 78.1 |
| LAO | 2432 | Vientiane | LAO | Lao | t | 67.2 |
| LBN | 2438 | Beirut | LBN | Arabic | t | 93 |
| LBY | 2441 | Tripoli | LBY | Arabic | t | 96 |
| LCA | 3065 | Castries | LCA | English | t | 20 |
| LIE | 2446 | Vaduz | LIE | German | t | 89 |
| LKA | 3217 | Colombo | LKA | Singali | t | 60.3 |
| LKA | 3217 | Colombo | LKA | Tamil | t | 19.6 |
| LSO | 2437 | Maseru | LSO | English | t | 0 |
| LSO | 2437 | Maseru | LSO | Sotho | t | 85 |
| LTU | 2447 | Vilnius | LTU | Lithuanian | t | 81.6 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | French | t | 4.2 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | German | t | 2.3 |
| LUX | 2452 | Luxembourg [Luxemburg/Letzebuerg] | LUX | Luxembourgish | t | 64.4 |
| LVA | 2434 | Riga | LVA | Latvian | t | 55.1 |
| MAC | 2454 | Macao | MAC | Portuguese | t | 2.3 |
| MAR | 2486 | Rabat | MAR | Arabic | t | 65 |
| MCO | 2695 | Monaco-Ville | MCO | French | t | 41.9 |
| MDA | 2690 | Chisinau | MDA | Romanian | t | 61.9 |
| MDG | 2455 | Antananarivo | MDG | French | t | 0 |
| MDG | 2455 | Antananarivo | MDG | Malagasy | t | 98.9 |
| MDV | 2463 | Male | MDV | Dhivehi | t | 100 |
| MEX | 2515 | Ciudad de Mexico | MEX | Spanish | t | 92.1 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | English | t | 0 |
| MHL | 2507 | Dalap-Uliga-Darrit | MHL | Marshallese | t | 96.8 |
| MKD | 2460 | Skopje | MKD | Macedonian | t | 66.5 |
| MLT | 2484 | Valletta | MLT | English | t | 2.1 |
| MLT | 2484 | Valletta | MLT | Maltese | t | 95.8 |
| MMR | 2710 | Rangoon (Yangon) | MMR | Burmese | t | 69 |
| MNG | 2696 | Ulan Bator | MNG | Mongolian | t | 78.8 |
| MNP | 2913 | Garapan | MNP | English | t | 4.8 |
| MSR | 2697 | Plymouth | MSR | English | t | 0 |
| MTQ | 2508 | Fort-de-France | MTQ | French | t | 0 |
| MWI | 2462 | Lilongwe | MWI | Chichewa | t | 58.3 |
| MYS | 2464 | Kuala Lumpur | MYS | Malay | t | 58.4 |
| MYT | 2514 | Mamoutzou | MYT | French | t | 20.3 |
| NCL | 3493 | Noumea | NCL | French | t | 34.3 |
| NFK | 2806 | Kingston | NFK | English | t | 0 |
| NIC | 2734 | Managua | NIC | Spanish | t | 97.6 |
| NIU | 2805 | Alofi | NIU | English | t | 0 |
| NLD | 5 | Amsterdam | NLD | Dutch | t | 95.6 |
| NOR | 2807 | Oslo | NOR | Norwegian | t | 96.6 |
| NPL | 2729 | Kathmandu | NPL | Nepali | t | 50.4 |
| NRU | 2728 | Yaren | NRU | English | t | 7.5 |
| NRU | 2728 | Yaren | NRU | Nauru | t | 57.5 |
| NZL | 3499 | Wellington | NZL | English | t | 87 |
| OMN | 2821 | Masqat | OMN | Arabic | t | 76.7 |
| PAK | 2831 | Islamabad | PAK | Urdu | t | 7.6 |
| PAN | 2882 | Ciudad de Panama | PAN | Spanish | t | 76.8 |
| PER | 2890 | Lima | PER | Aimara | t | 2.3 |
| PER | 2890 | Lima | PER | Ketdua | t | 16.4 |
| PER | 2890 | Lima | PER | Spanish | t | 79.8 |
| PHL | 766 | Manila | PHL | Pilipino | t | 29.3 |
| PLW | 2881 | Koror | PLW | English | t | 3.2 |
| PLW | 2881 | Koror | PLW | Palau | t | 82.2 |
| POL | 2928 | Warszawa | POL | Polish | t | 97.6 |
| PRI | 2919 | San Juan | PRI | Spanish | t | 51.3 |
| PRK | 2318 | Pyongyang | PRK | Korean | t | 99.9 |
| PRT | 2914 | Lisboa | PRT | Portuguese | t | 99 |
| PRY | 2885 | Asuncion | PRY | Guarani | t | 40.1 |
| PRY | 2885 | Asuncion | PRY | Spanish | t | 55.1 |
| PYF | 3016 | Papeete | PYF | French | t | 40.8 |
| QAT | 2973 | Doha | QAT | Arabic | t | 40.7 |
| ROM | 3018 | Bucuresti | ROM | Romani | t | 0.7 |
| ROM | 3018 | Bucuresti | ROM | Romanian | t | 90.7 |
| RUS | 3580 | Moscow | RUS | Russian | t | 86.6 |
| RWA | 3047 | Kigali | RWA | French | t | 0 |
| RWA | 3047 | Kigali | RWA | Rwanda | t | 100 |
| SAU | 3173 | Riyadh | SAU | Arabic | t | 95 |
| SDN | 3225 | Khartum | SDN | Arabic | t | 49.4 |
| SEN | 3198 | Dakar | SEN | Wolof | t | 48.1 |
| SGP | 3208 | Singapore | SGP | Chinese | t | 77.1 |
| SGP | 3208 | Singapore | SGP | Malay | t | 14.1 |
| SGP | 3208 | Singapore | SGP | Tamil | t | 7.4 |
| SHN | 3063 | Jamestown | SHN | English | t | 0 |
| SJM | 938 | Longyearbyen | SJM | Norwegian | t | 0 |
| SLV | 645 | San Salvador | SLV | Spanish | t | 100 |
| SMR | 3171 | San Marino | SMR | Italian | t | 100 |
| SOM | 3214 | Mogadishu | SOM | Arabic | t | 0 |
| SOM | 3214 | Mogadishu | SOM | Somali | t | 98.3 |
| SPM | 3067 | Saint-Pierre | SPM | French | t | 0 |
| SVK | 3209 | Bratislava | SVK | Slovak | t | 85.6 |
| SVN | 3212 | Ljubljana | SVN | Slovene | t | 87.9 |
| SWE | 3048 | Stockholm | SWE | Swedish | t | 89.5 |
| SWZ | 3244 | Mbabane | SWZ | Swazi | t | 89.9 |
| SYC | 3206 | Victoria | SYC | English | t | 3.8 |
| SYC | 3206 | Victoria | SYC | French | t | 1.3 |
| SYR | 3250 | Damascus | SYR | Arabic | t | 90 |
| TCA | 3423 | Cockburn Town | TCA | English | t | 0 |
| TCD | 3337 | NDjamena | TCD | Arabic | t | 12.3 |
| TGO | 3332 | Lome | TGO | Ewe | t | 23.2 |
| TGO | 3332 | Lome | TGO | Kabye | t | 13.8 |
| THA | 3320 | Bangkok | THA | Thai | t | 52.6 |
| TJK | 3261 | Dushanbe | TJK | Tadzhik | t | 62.2 |
| TKL | 3333 | Fakaofo | TKL | English | t | 0 |
| TKM | 3419 | Ashgabat | TKM | Turkmenian | t | 76.7 |
| TMP | 1522 | Dili | TMP | Portuguese | t | 0 |
| TON | 3334 | Nukualofa | TON | English | t | 0 |
| TON | 3334 | Nukualofa | TON | Tongan | t | 98.3 |
| TUN | 3349 | Tunis | TUN | Arabic | t | 69.9 |
| TUR | 3358 | Ankara | TUR | Turkish | t | 87.6 |
| TUV | 3424 | Funafuti | TUV | English | t | 0 |
| TUV | 3424 | Funafuti | TUV | Tuvalu | t | 92.5 |
| TWN | 3263 | Taipei | TWN | Mandarin Chinese | t | 20.1 |
| TZA | 3306 | Dodoma | TZA | Swahili | t | 8.8 |
| UKR | 3426 | Kyiv | UKR | Ukrainian | t | 64.7 |
| URY | 3492 | Montevideo | URY | Spanish | t | 95.7 |
| USA | 3813 | Washington | USA | English | t | 86.2 |
| UZB | 3503 | Toskent | UZB | Uzbek | t | 72.6 |
| VAT | 3538 | Citta del Vaticano | VAT | Italian | t | 0 |
| VCT | 3066 | Kingstown | VCT | English | t | 0 |
| VEN | 3539 | Caracas | VEN | Spanish | t | 96.9 |
| VGB | 537 | Road Town | VGB | English | t | 0 |
| VIR | 4067 | Charlotte Amalie | VIR | English | t | 81.7 |
| VNM | 3770 | Hanoi | VNM | Vietnamese | t | 86.8 |
| VUT | 3537 | Port-Vila | VUT | Bislama | t | 56.6 |
| VUT | 3537 | Port-Vila | VUT | English | t | 28.3 |
| VUT | 3537 | Port-Vila | VUT | French | t | 14.2 |
| WSM | 3169 | Apia | WSM | English | t | 0.6 |
| WSM | 3169 | Apia | WSM | Samoan | t | 47.5 |
| YEM | 1780 | Sanaa | YEM | Arabic | t | 99.6 |
| YUG | 1792 | Beograd | YUG | Serbo-Croatian | t | 75.2 |
| ZAF | 716 | Pretoria | ZAF | Afrikaans | t | 14.3 |
| ZAF | 716 | Pretoria | ZAF | English | t | 8.5 |
| ZAF | 716 | Pretoria | ZAF | Xhosa | t | 17.7 |
| ZAF | 716 | Pretoria | ZAF | Zulu | t | 22.7 |
| ZWE | 4068 | Harare | ZWE | English | t | 2.2 |
| (237 rows) |
| |
| --query2 |
| with lang_total as |
| ( select count(*) as lang_count,country_co.code,countrylanguage_co.countrycode |
| from country_co join countrylanguage_co on (country_co.code=countrylanguage_co.countrycode and governmentform='Federal Republic') |
| group by country_co.code,countrylanguage_co.countrycode order by country_co.code) |
| |
| select lang_count,country_co.code,country_co.name,country_co.continent,country_co.region,country_co.population |
| from country_co left outer join lang_total |
| on (lang_total.code = country_co.code) |
| where country_co.indepyear > 1970 and lang_total.lang_count >=1 and lang_total.lang_count >=1 |
| order by lang_total.lang_count desc; |
| lang_count | code | name | continent | region | population |
| ------------+------+---------------------------------+-----------+-----------------+------------ |
| 12 | RUS | Russian Federation | Europe | Eastern Europe | 146934000 |
| 6 | FSM | Micronesia, Federated States of | Oceania | Micronesia | 119000 |
| 4 | AZE | Azerbaijan | Asia | Middle East | 7734000 |
| 1 | BIH | Bosnia and Herzegovina | Europe | Southern Europe | 3972000 |
| (4 rows) |
| |
| -- Using CTE in the WHERE clause |
| --query3 |
| with lang_total as |
| ( select lang_count,countrycode from |
| ( |
| ( |
| select count(*) as lang_count,country_co.code,countrylanguage_co.countrycode |
| from country_co join countrylanguage_co on (country_co.code=countrylanguage_co.countrycode and governmentform='Federal Republic') |
| group by country_co.code,countrylanguage_co.countrycode order by country_co.code) |
| |
| UNION ALL |
| |
| ( |
| select count(*) as lang_count,country_co.code,countrylanguage_co.countrycode |
| from country_co join countrylanguage_co on (country_co.code=countrylanguage_co.countrycode and governmentform='Monarchy') |
| group by country_co.code,countrylanguage_co.countrycode order by country_co.code) |
| |
| ) FOO1 |
| ) |
| select * from |
| ( |
| select count(*) as cnt,country_co.code,country_co.name |
| from |
| country_co,countrylanguage_co |
| where country_co.code=countrylanguage_co.countrycode group by country_co.code,country_co.name) AS FOO |
| where foo.cnt = (select max(lang_count) from lang_total) order by foo.code; |
| cnt | code | name |
| -----+------+-------------------- |
| 12 | CAN | Canada |
| 12 | CHN | China |
| 12 | IND | India |
| 12 | RUS | Russian Federation |
| 12 | USA | United States |
| (5 rows) |
| |
| --query4 |
| with diversecountries as |
| (select country_co.code,country_co.name,country_co.capital,d.CNT |
| from country_co, |
| (select countrylanguage_co.countrycode,count(*) as CNT from countrylanguage_co group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country_co.code and country_co.gnp > 100000) |
| select diversecountries.name,city_co.name,diversecountries.CNT |
| from diversecountries,city_co where city_co.id = diversecountries.capital |
| order by diversecountries.name; |
| name | name | cnt |
| --------------------+------------------+----- |
| Australia | Canberra | 8 |
| Austria | Wien | 8 |
| Canada | Ottawa | 12 |
| China | Peking | 12 |
| Denmark | Kobenhavn | 7 |
| India | New Delhi | 12 |
| Iran | Teheran | 10 |
| Italy | Roma | 8 |
| Myanmar | Rangoon (Yangon) | 8 |
| Russian Federation | Moscow | 12 |
| South Africa | Pretoria | 11 |
| United States | Washington | 12 |
| (12 rows) |
| |
| -- some queries with merge joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=off; |
| set enable_mergejoin=on; |
| -- query 5 |
| with somecheapasiandiversecountries as |
| ( |
| select FOO.code,FOO.COUNTRY_CO,FOO.CAPITAL,FOO.headofstate,count(*) ASIAN_COUNT from |
| ( |
| select country_co.code,country_co.name COUNTRY_CO,city_co.name CAPITAL,country_co.headofstate |
| from country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.gnp < 10000 |
| and country_co.region = 'Southeast Asia' |
| and country_co.continent = 'Asia' |
| |
| UNION ALL |
| select country_co.code,country_co.name COUNTRY_CO,city_co.name CAPITAL,country_co.headofstate |
| from country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.gnp < 10000 |
| and country_co.region = 'Eastern Asia' |
| and country_co.continent = 'Asia' |
| UNION ALL |
| select country_co.code,country_co.name COUNTRY_CO,city_co.name CAPITAL,country_co.headofstate |
| from country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.gnp < 10000 |
| and country_co.region = 'Middle East' |
| and country_co.continent = 'Asia' |
| ) FOO, countrylanguage_co |
| where FOO.code = countrylanguage_co.countrycode |
| group by FOO.code,FOO.COUNTRY_CO,FOO.CAPITAL,FOO.headofstate,countrylanguage_co.countrycode |
| HAVING count(*) >= |
| (select min(CNT) FROM |
| (select count(*) CNT,country_co.code from countrylanguage_co,country_co |
| where countrylanguage_co.countrycode=country_co.code |
| and country_co.continent = 'Asia' |
| and country_co.region = 'Southern and Central Asia' |
| group by country_co.code |
| ) FOO1 |
| ) |
| ) |
| select FOO.code,FOO.COUNTRY_CO,FOO.CAPITAL,FOO.headofstate,count(*) COMPARED_WITH_CHEAP_ASIAN_CNT |
| from |
| ( |
| select country_co.code,country_co.name COUNTRY_CO,city_co.name CAPITAL,country_co.headofstate |
| from country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.continent = 'North America' |
| UNION ALL |
| select country_co.code,country_co.name COUNTRY_CO,city_co.name CAPITAL,country_co.headofstate |
| from country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.continent = 'South America' |
| ) FOO,countrylanguage_co |
| where FOO.code = countrylanguage_co.countrycode |
| group by FOO.code,FOO.COUNTRY_CO,FOO.CAPITAL,FOO.headofstate |
| HAVING count(*) >= |
| (select min(ASIAN_COUNT) FROM |
| (select ASIAN_COUNT FROM somecheapasiandiversecountries,country_co |
| where somecheapasiandiversecountries.code = country_co.code |
| and country_co.gnp >= country_co.gnpold |
| ) ASIANCOUNT |
| ) |
| order by COUNTRY_CO; |
| code | country_co | capital | headofstate | compared_with_cheap_asian_cnt |
| ------+----------------------------------+-------------------------+-----------------------------------+------------------------------- |
| ATG | Antigua and Barbuda | Saint Johns | Elisabeth II | 2 |
| ARG | Argentina | Buenos Aires | Fernando de la Rua | 3 |
| ABW | Aruba | Oranjestad | Beatrix | 4 |
| BHS | Bahamas | Nassau | Elisabeth II | 2 |
| BRB | Barbados | Bridgetown | Elisabeth II | 2 |
| BLZ | Belize | Belmopan | Elisabeth II | 4 |
| BOL | Bolivia | La Paz | Hugo Banzer Suarez | 4 |
| BRA | Brazil | Brasilia | Fernando Henrique Cardoso | 5 |
| CAN | Canada | Ottawa | Elisabeth II | 12 |
| CHL | Chile | Santiago de Chile | Ricardo Lagos Escobar | 4 |
| COL | Colombia | Santafe de Bogota | Andres Pastrana Arango | 5 |
| CRI | Costa Rica | San Jose | Miguel Angel Rodriguez Echeverria | 4 |
| DMA | Dominica | Roseau | Vernon Shaw | 2 |
| DOM | Dominican Republic | Santo Domingo de Guzman | Hipolito Mejia Dominguez | 2 |
| ECU | Ecuador | Quito | Gustavo Noboa Bejarano | 2 |
| SLV | El Salvador | San Salvador | Francisco Guillermo Flores Perez | 2 |
| GUF | French Guiana | Cayenne | Jacques Chirac | 2 |
| GRL | Greenland | Nuuk | Margrethe II | 2 |
| GLP | Guadeloupe | Basse-Terre | Jacques Chirac | 2 |
| GTM | Guatemala | Ciudad de Guatemala | Alfonso Portillo Cabrera | 5 |
| GUY | Guyana | Georgetown | Bharrat Jagdeo | 3 |
| HTI | Haiti | Port-au-Prince | Jean-Bertrand Aristide | 2 |
| HND | Honduras | Tegucigalpa | Carlos Roberto Flores Facusse | 4 |
| JAM | Jamaica | Kingston | Elisabeth II | 2 |
| MTQ | Martinique | Fort-de-France | Jacques Chirac | 2 |
| MEX | Mexico | Ciudad de Mexico | Vicente Fox Quesada | 6 |
| ANT | Netherlands Antilles | Willemstad | Beatrix | 3 |
| NIC | Nicaragua | Managua | Arnoldo Aleman Lacayo | 4 |
| PAN | Panama | Ciudad de Panama | Mireya Elisa Moscoso Rodriguez | 6 |
| PRY | Paraguay | Asuncion | Luis Angel Gonzalez Macchi | 4 |
| PER | Peru | Lima | Valentin Paniagua Corazao | 3 |
| PRI | Puerto Rico | San Juan | George W. Bush | 2 |
| KNA | Saint Kitts and Nevis | Basseterre | Elisabeth II | 2 |
| LCA | Saint Lucia | Castries | Elisabeth II | 2 |
| VCT | Saint Vincent and the Grenadines | Kingstown | Elisabeth II | 2 |
| SUR | Suriname | Paramaribo | Ronald Venetiaan | 2 |
| TTO | Trinidad and Tobago | Port-of-Spain | Arthur N. R. Robinson | 3 |
| USA | United States | Washington | George W. Bush | 12 |
| VEN | Venezuela | Caracas | Hugo Chavez Frias | 3 |
| VIR | Virgin Islands, U.S. | Charlotte Amalie | George W. Bush | 3 |
| (40 rows) |
| |
| -- query 6 |
| select count(*) from |
| ( select r.* from |
| ( with fact as |
| ( |
| select country_co.name as COUNTRY_CO,country_co.code,city_co.name as CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,AGG1.region |
| from |
| (select |
| sum(case when (city_co.population >= 0.5 * country_co.population) then country_co.population else city_co.population end) as S_POPULATION, |
| sum(case when (gnp >= gnpold) then gnp else gnpold end) as S_GNP, |
| avg(case when (lifeexpectancy > 60) then 50 else lifeexpectancy end) as AVG_LIFE,country_co.region |
| from country_co,city_co |
| where governmentform != 'Constitutional Monarchy' |
| and country_co.capital = city_co.id |
| and indepyear > 0 |
| group by country_co.region) AGG1 |
| ,country_co,city_co |
| where country_co.capital = city_co.id |
| and country_co.region = AGG1.region |
| ) |
| select code,COUNTRY_CO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_co |
| where fact.code = countrylanguage_co.countrycode and isofficial = 'True' |
| and fact.region = 'South America' |
| UNION ALL |
| select code,COUNTRY_CO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_co |
| where fact.code = countrylanguage_co.countrycode and isofficial = 'True' |
| and fact.region = 'North America' |
| UNION ALL |
| select code,COUNTRY_CO,CAPITAL,S_POPULATION,S_GNP,AVG_LIFE,language as OFFICIALLANGUAGE,region |
| from fact,countrylanguage_co |
| where fact.code = countrylanguage_co.countrycode and isofficial = 'True' |
| and fact.region = 'Caribbean' |
| ) as r |
| left join |
| ( |
| select 'ARG' as CODE UNION ALL |
| select 'BOL' as CODE UNION ALL |
| select 'BRA' as CODE UNION ALL |
| select 'PER' as CODE UNION ALL |
| select 'URY' as CODE UNION ALL |
| select 'IND' as CODE UNION ALL |
| select 'LCA' as CODE UNION ALL |
| select 'VCT' as CODE |
| ) as r1 |
| on r.code = r1.code) AS FOO; |
| count |
| ------- |
| 43 |
| (1 row) |
| |
| -- query7 |
| with alleuropeanlanguages as |
| (select country_co.code,country_co.name COUNTRY_CO, city_co.name CAPITAL, language, isofficial, percentage |
| FROM country_co,city_co,countrylanguage_co |
| WHERE country_co.code = countrylanguage_co.countrycode |
| and country_co.capital = city_co.id |
| and country_co.continent = 'Europe') |
| select * from |
| (select * from alleuropeanlanguages where isofficial='True') e1, |
| (select * from alleuropeanlanguages where percentage > 50) e2 |
| where e1.code = e2.code order by e2.COUNTRY_CO,e1.language; |
| code | country_co | capital | language | isofficial | percentage | code | country_co | capital | language | isofficial | percentage |
| ------+------------------------+-----------------------------------+----------------+------------+------------+------+------------------------+-----------------------------------+----------------+------------+------------ |
| ALB | Albania | Tirana | Albaniana | t | 97.9 | ALB | Albania | Tirana | Albaniana | t | 97.9 |
| AUT | Austria | Wien | German | t | 92 | AUT | Austria | Wien | German | t | 92 |
| BLR | Belarus | Minsk | Belorussian | t | 65.6 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BLR | Belarus | Minsk | Russian | t | 32 | BLR | Belarus | Minsk | Belorussian | t | 65.6 |
| BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | French | t | 32.6 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BEL | Belgium | Bruxelles [Brussel] | German | t | 1 | BEL | Belgium | Bruxelles [Brussel] | Dutch | t | 59.2 |
| BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 | BIH | Bosnia and Herzegovina | Sarajevo | Serbo-Croatian | t | 99.2 |
| BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 | BGR | Bulgaria | Sofija | Bulgariana | t | 83.2 |
| HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 | HRV | Croatia | Zagreb | Serbo-Croatian | t | 95.9 |
| CZE | Czech Republic | Praha | Czech | t | 81.2 | CZE | Czech Republic | Praha | Czech | t | 81.2 |
| DNK | Denmark | Kobenhavn | Danish | t | 93.5 | DNK | Denmark | Kobenhavn | Danish | t | 93.5 |
| EST | Estonia | Tallinn | Estonian | t | 65.3 | EST | Estonia | Tallinn | Estonian | t | 65.3 |
| FRO | Faroe Islands | Torshavn | Danish | t | 0 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FRO | Faroe Islands | Torshavn | Faroese | t | 100 | FRO | Faroe Islands | Torshavn | Faroese | t | 100 |
| FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FIN | Finland | Helsinki [Helsingfors] | Swedish | t | 5.7 | FIN | Finland | Helsinki [Helsingfors] | Finnish | t | 92.7 |
| FRA | France | Paris | French | t | 93.6 | FRA | France | Paris | French | t | 93.6 |
| DEU | Germany | Berlin | German | t | 91.3 | DEU | Germany | Berlin | German | t | 91.3 |
| GIB | Gibraltar | Gibraltar | English | t | 88.9 | GIB | Gibraltar | Gibraltar | English | t | 88.9 |
| GRC | Greece | Athenai | Greek | t | 98.5 | GRC | Greece | Athenai | Greek | t | 98.5 |
| HUN | Hungary | Budapest | Hungarian | t | 98.5 | HUN | Hungary | Budapest | Hungarian | t | 98.5 |
| ISL | Iceland | Reykjavik | Icelandic | t | 95.7 | ISL | Iceland | Reykjavik | Icelandic | t | 95.7 |
| IRL | Ireland | Dublin | English | t | 98.4 | IRL | Ireland | Dublin | English | t | 98.4 |
| IRL | Ireland | Dublin | Irish | t | 1.6 | IRL | Ireland | Dublin | English | t | 98.4 |
| ITA | Italy | Roma | Italian | t | 94.1 | ITA | Italy | Roma | Italian | t | 94.1 |
| LVA | Latvia | Riga | Latvian | t | 55.1 | LVA | Latvia | Riga | Latvian | t | 55.1 |
| LIE | Liechtenstein | Vaduz | German | t | 89 | LIE | Liechtenstein | Vaduz | German | t | 89 |
| LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 | LTU | Lithuania | Vilnius | Lithuanian | t | 81.6 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | French | t | 4.2 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | German | t | 2.3 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 | LUX | Luxembourg | Luxembourg [Luxemburg/Letzebuerg] | Luxembourgish | t | 64.4 |
| MKD | Macedonia | Skopje | Macedonian | t | 66.5 | MKD | Macedonia | Skopje | Macedonian | t | 66.5 |
| MLT | Malta | Valletta | English | t | 2.1 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MLT | Malta | Valletta | Maltese | t | 95.8 | MLT | Malta | Valletta | Maltese | t | 95.8 |
| MDA | Moldova | Chisinau | Romanian | t | 61.9 | MDA | Moldova | Chisinau | Romanian | t | 61.9 |
| NLD | Netherlands | Amsterdam | Dutch | t | 95.6 | NLD | Netherlands | Amsterdam | Dutch | t | 95.6 |
| NOR | Norway | Oslo | Norwegian | t | 96.6 | NOR | Norway | Oslo | Norwegian | t | 96.6 |
| POL | Poland | Warszawa | Polish | t | 97.6 | POL | Poland | Warszawa | Polish | t | 97.6 |
| PRT | Portugal | Lisboa | Portuguese | t | 99 | PRT | Portugal | Lisboa | Portuguese | t | 99 |
| ROM | Romania | Bucuresti | Romani | t | 0.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| ROM | Romania | Bucuresti | Romanian | t | 90.7 | ROM | Romania | Bucuresti | Romanian | t | 90.7 |
| RUS | Russian Federation | Moscow | Russian | t | 86.6 | RUS | Russian Federation | Moscow | Russian | t | 86.6 |
| SMR | San Marino | San Marino | Italian | t | 100 | SMR | San Marino | San Marino | Italian | t | 100 |
| SVK | Slovakia | Bratislava | Slovak | t | 85.6 | SVK | Slovakia | Bratislava | Slovak | t | 85.6 |
| SVN | Slovenia | Ljubljana | Slovene | t | 87.9 | SVN | Slovenia | Ljubljana | Slovene | t | 87.9 |
| ESP | Spain | Madrid | Spanish | t | 74.4 | ESP | Spain | Madrid | Spanish | t | 74.4 |
| SWE | Sweden | Stockholm | Swedish | t | 89.5 | SWE | Sweden | Stockholm | Swedish | t | 89.5 |
| CHE | Switzerland | Bern | French | t | 19.2 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | German | t | 63.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Italian | t | 7.7 | CHE | Switzerland | Bern | German | t | 63.6 |
| CHE | Switzerland | Bern | Romansh | t | 0.6 | CHE | Switzerland | Bern | German | t | 63.6 |
| UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 | UKR | Ukraine | Kyiv | Ukrainian | t | 64.7 |
| GBR | United Kingdom | London | English | t | 97.3 | GBR | United Kingdom | London | English | t | 97.3 |
| YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 | YUG | Yugoslavia | Beograd | Serbo-Croatian | t | 75.2 |
| (55 rows) |
| |
| -- query8 |
| with allcountry_costats as |
| ( select country_co.code,country_co.name,count(distinct city_co.id) CITY_CO_CNT, |
| count(distinct countrylanguage_co.language) LANG_CNT |
| from country_co,city_co,countrylanguage_co |
| where country_co.code = city_co.countrycode |
| and country_co.code = countrylanguage_co.countrycode |
| group by country_co.code,country_co.name |
| ) |
| select sum(FOO.CITY_CO_CNT) REGION_CITY_CO_CNT,sum(FOO.LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountry_costats.code,allcountry_costats.name COUNTRY_CO,CITY_CO_CNT,LANG_CNT,country_co.region,city_co.name CAPITAL |
| from allcountry_costats,country_co,city_co |
| where allcountry_costats.code = country_co.code |
| and country_co.capital = city_co.id |
| and CITY_CO_CNT/LANG_CNT > 1 |
| and country_co.continent = 'Asia' |
| UNION ALL |
| select allcountry_costats.code,allcountry_costats.name COUNTRY_CO,CITY_CO_CNT,LANG_CNT,country_co.region,city_co.name CAPITAL |
| from allcountry_costats,country_co,city_co |
| where allcountry_costats.code = country_co.code |
| and country_co.capital = city_co.id |
| and CITY_CO_CNT/LANG_CNT > 1 |
| and country_co.continent = 'North America' |
| UNION ALL |
| select allcountry_costats.code,allcountry_costats.name COUNTRY_CO,CITY_CO_CNT,LANG_CNT,country_co.region,city_co.name CAPITAL |
| from allcountry_costats,country_co,city_co |
| where allcountry_costats.code = country_co.code |
| and country_co.capital = city_co.id |
| and CITY_CO_CNT/LANG_CNT > (select max(CITY_CO_CNT/LANG_CNT) from allcountry_costats,country_co where allcountry_costats.code = country_co.code AND country_co.continent='Europe') |
| ) FOO |
| ,allcountry_costats,country_co |
| WHERE allcountry_costats.code = country_co.code |
| and FOO.region = country_co.region |
| group by FOO.region order by FOO.region; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| region_city_co_cnt | region_lang_cnt | region |
| --------------------+-----------------+--------------------------- |
| 840 | 192 | Caribbean |
| 2824 | 112 | Central America |
| 11336 | 384 | Eastern Asia |
| 2664 | 396 | Middle East |
| 1625 | 125 | North America |
| 3500 | 70 | South America |
| 3179 | 528 | Southeast Asia |
| 12278 | 896 | Southern and Central Asia |
| (8 rows) |
| |
| -- some queries with hash joins and index scans |
| set enable_nestloop=off; |
| set enable_hashjoin=on; |
| set enable_mergejoin=off; |
| --query 9 |
| with diversecountries as |
| (select country_co.code,country_co.name,country_co.capital,d.CNT |
| from country_co, |
| (select countrylanguage_co.countrycode,count(*) as CNT from countrylanguage_co group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country_co.code and country_co.gnp > 100000) |
| select d1.code,d1.name,d1.capital,city_co.name CAPITAL_CITY_CO,d1.CNT,d2.CNT |
| from |
| diversecountries d1 left join country_co |
| ON (d1.code = country_co.code AND d1.CNT < 8) |
| left join diversecountries d2 |
| ON (country_co.code = d2.code AND d2.CNT > 8) |
| INNER JOIN city_co |
| ON(d1.capital = city_co.id) |
| ORDER BY d1.name; |
| code | name | capital | capital_city_co | cnt | cnt |
| ------+--------------------+---------+------------------+-----+----- |
| AUS | Australia | 135 | Canberra | 8 | |
| AUT | Austria | 1523 | Wien | 8 | |
| CAN | Canada | 1822 | Ottawa | 12 | |
| CHN | China | 1891 | Peking | 12 | |
| DNK | Denmark | 3315 | Kobenhavn | 7 | |
| IND | India | 1109 | New Delhi | 12 | |
| IRN | Iran | 1380 | Teheran | 10 | |
| ITA | Italy | 1464 | Roma | 8 | |
| MMR | Myanmar | 2710 | Rangoon (Yangon) | 8 | |
| RUS | Russian Federation | 3580 | Moscow | 12 | |
| ZAF | South Africa | 716 | Pretoria | 11 | |
| USA | United States | 3813 | Washington | 12 | |
| (12 rows) |
| |
| --query 10 , multiple ctes, joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country_co |
| group by region |
| ) FOO,countrylanguage_co,country_co |
| where |
| country_co.code = countrylanguage_co.countrycode |
| and FOO.region = country_co.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country_co |
| group by region |
| ) FOO,countrylanguage_co,country_co |
| where |
| country_co.code = countrylanguage_co.countrycode |
| and FOO.region = country_co.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountry_costats as |
| ( select country_co.code,country_co.name,count(distinct city_co.id) CITY_CO_CNT, |
| count(distinct countrylanguage_co.language) LANG_CNT |
| from country_co,city_co,countrylanguage_co |
| where country_co.code = city_co.countrycode |
| and country_co.code = countrylanguage_co.countrycode |
| group by country_co.code,country_co.name |
| ) |
| select allcountry_costats.CITY_CO_CNT,allcountry_costats.LANG_CNT,allcountry_costats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_costats,country_co |
| where longlivingregions.region = denseregions.region and allcountry_costats.code = country_co.code and country_co.region = longlivingregions.region |
| and country_co.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountry_costats.CITY_CO_CNT,allcountry_costats.LANG_CNT,allcountry_costats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_costats,country_co |
| where longlivingregions.region = denseregions.region and allcountry_costats.code = country_co.code and country_co.region = longlivingregions.region |
| and country_co.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountry_costats.CITY_CO_CNT,allcountry_costats.LANG_CNT,allcountry_costats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountry_costats,country_co |
| where longlivingregions.region = denseregions.region and allcountry_costats.code = country_co.code and country_co.region = longlivingregions.region |
| and country_co.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_co_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| -------------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| --query 11 |
| with allcity_costats as |
| ( select city_co.name CITY_CO,city_co.id,country_co.name COUNTRY_CO,city_co.district,city_co.population as CITY_CO_POP |
| from |
| city_co,country_co |
| where city_co.countrycode = country_co.code |
| ), |
| alldistrictstats as |
| ( select allcity_costats.district,allcity_costats.COUNTRY_CO,sum(CITY_CO_POP) DISTRICT_POP, |
| count(CITY_CO) as D_CITY_CO_CNT |
| from allcity_costats |
| group by allcity_costats.district,allcity_costats.COUNTRY_CO |
| order by district,COUNTRY_CO |
| ), |
| allcountry_costats as |
| ( select alldistrictstats.COUNTRY_CO,country_co.code,sum(D_CITY_CO_CNT) C_CITY_CO_CNT, |
| count(distinct countrylanguage_co.language) C_LANG_CNT |
| from alldistrictstats,country_co,countrylanguage_co |
| where alldistrictstats.COUNTRY_CO = country_co.name |
| and country_co.code = countrylanguage_co.countrycode |
| group by COUNTRY_CO,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CO_CNT) REGION_CITY_CO_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountry_costats.code,allcountry_costats.COUNTRY_CO,C_CITY_CO_CNT,C_LANG_CNT,country_co.region,city_co.name CAPITAL |
| from allcountry_costats,country_co,city_co |
| where allcountry_costats.code = country_co.code |
| and country_co.capital = city_co.id |
| and C_CITY_CO_CNT/C_LANG_CNT > 1 |
| and country_co.continent = 'Asia') FOO |
| ,allcountry_costats,country_co |
| WHERE allcountry_costats.code = country_co.code |
| and FOO.region = country_co.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CO_CNT as CITY_CO_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CO_CNT) CITY_CO_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountry_costats.code,allcountry_costats.COUNTRY_CO,C_CITY_CO_CNT,C_LANG_CNT,country_co.region,allcity_costats.CITY_CO CAPITAL |
| from allcountry_costats,country_co,allcity_costats |
| where allcountry_costats.code = country_co.code |
| and country_co.capital = allcity_costats.id |
| and C_CITY_CO_CNT/C_LANG_CNT > 1 |
| and country_co.continent = 'Europe') FOO |
| ,allcountry_costats,country_co |
| WHERE allcountry_costats.code = country_co.code |
| and FOO.region = country_co.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_co_cnt | lang_cnt | identifier |
| -------------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- Queries using multiple CTEs |
| -- query1 - all CTEs being used once in the main query |
| with capitals as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital), |
| lang_total as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code), |
| alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe'), |
| diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000) |
| select capitals.name CAPITAL,lang_total.lang_count COUNTRY_LANG_COUNT,capitals.code,country.name |
| from capitals,lang_total,country |
| where capitals.code = lang_total.countrycode |
| and capitals.code = country.code |
| and country.code NOT IN (select diversecountries.code from diversecountries,alleuropeanlanguages |
| where diversecountries.code = alleuropeanlanguages.code) |
| order by capitals.code; |
| capital | country_lang_count | code | name |
| ------------------+--------------------+------+--------------------------------- |
| Buenos Aires | 3 | ARG | Argentina |
| Baku | 4 | AZE | Azerbaijan |
| Sarajevo | 1 | BIH | Bosnia and Herzegovina |
| Brasilia | 5 | BRA | Brazil |
| Berlin | 6 | DEU | Germany |
| Palikir | 6 | FSM | Micronesia, Federated States of |
| New Delhi | 12 | IND | India |
| Antananarivo | 2 | MDG | Madagascar |
| Ciudad de Mexico | 6 | MEX | Mexico |
| Abuja | 10 | NGA | Nigeria |
| Washington | 12 | USA | United States |
| Caracas | 3 | VEN | Venezuela |
| Beograd | 6 | YUG | Yugoslavia |
| (13 rows) |
| |
| -- query 2 multiple CTEs being used multiple times through joins |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| order by name |
| LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_SURFACE_AREA | REGION_LIFETIME | REGION_POP | lang_count | REGION_GNP | region |
| ----------+----------+---------------------------------------+---------------------+------------------+------------+------------+------------+--------------------------- |
| 4 | 5 | Afghanistan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 3 | Albania | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 18 | 2 | Algeria | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 5 | 9 | Angola | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 2 | Antigua and Barbuda | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 57 | 3 | Argentina | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 2 | Armenia | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 14 | 8 | Australia | 62471162.00 | 78.8000030517578 | 22753100 | 11 | 405851.00 | Australia and New Zealand |
| 6 | 8 | Austria | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 4 | 4 | Azerbaijan | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 1 | 2 | Bahamas | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 1 | 2 | Bahrain | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 24 | 7 | Bangladesh | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 1 | 2 | Barbados | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 16 | 4 | Belarus | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 9 | 6 | Belgium | 6649768.00 | 78.2555567423503 | 183247600 | 21 | 4673272.00 | Western Europe |
| 2 | 4 | Belize | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 4 | 7 | Benin | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Bhutan | 90749795.00 | 61.3500003814697 | 1490776000 | 54 | 810604.00 | Southern and Central Asia |
| 8 | 4 | Bolivia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 3 | 1 | Bosnia and Herzegovina | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 2 | 5 | Botswana | 23060186.00 | 44.8199996948242 | 46886000 | 21 | 126931.00 | Southern Africa |
| 250 | 5 | Brazil | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 4 | Brunei | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 10 | 4 | Bulgaria | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 3 | 6 | Burkina Faso | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 3 | Burundi | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 3 | 4 | Cambodia | 35322186.00 | 64.4000001387163 | 518541000 | 47 | 642643.00 | Southeast Asia |
| 7 | 8 | Cameroon | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 49 | 12 | Canada | 236342035.00 | 75.8199996948242 | 309632000 | 18 | 9111890.00 | North America |
| 1 | 2 | Cape Verde | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 1 | 6 | Central African Republic | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 2 | 8 | Chad | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 29 | 4 | Chile | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 38 | 5 | Colombia | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 1 | 5 | Comoros | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 2 | 6 | Congo | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | 55663022.00 | 50.3111110263401 | 95652000 | 47 | 32938.00 | Central Africa |
| 1 | 4 | Costa Rica | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| 5 | 5 | Cote deIvoire | 39744907.00 | 52.7411768296186 | 221672000 | 65 | 106711.00 | Western Africa |
| 4 | 2 | Croatia | 5845195.40 | 76.5285720825195 | 144674200 | 22 | 2012289.00 | Southern Europe |
| 14 | 1 | Cuba | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 2 | 2 | Cyprus | 10153662.00 | 70.5666671329074 | 188380700 | 21 | 677260.00 | Middle East |
| 10 | 8 | Czech Republic | 214731845.00 | 69.9299995422363 | 307026000 | 28 | 659980.00 | Eastern Europe |
| 1 | 3 | Djibouti | 43631319.00 | 50.8105261953254 | 246999000 | 80 | 69925.00 | Eastern Africa |
| 1 | 2 | Dominica | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 6 | 2 | Dominican Republic | 363261.00 | 73.0583332379659 | 38140000 | 10 | 103586.20 | Caribbean |
| 15 | 2 | Ecuador | 74318167.00 | 70.9461532005897 | 345780000 | 21 | 1511874.00 | South America |
| 37 | 2 | Egypt | 36993520.00 | 65.3857127598354 | 173266000 | 14 | 243870.00 | Northern Africa |
| 7 | 2 | El Salvador | 14052371.00 | 71.0249996185303 | 135221000 | 23 | 473151.00 | Central America |
| (50 rows) |
| |
| |
| -- Queries with multiple CTEs referencing one another |
| -- query1 |
| with city_official_language as |
| (select city.id,city.name CITY,country.name COUNTRY,countrylanguage.language,city.population,country.capital |
| from city,countrylanguage,country |
| where city.countrycode = country.code |
| and country.code = countrylanguage.countrycode |
| and countrylanguage.isofficial = 'True' |
| ), |
| capital_official_language as |
| (select c2.CITY, c1.COUNTRY,c1.language OFFICIAL_LANGUAGE,c1.CITY CAPITAL |
| from city_official_language c1 , city_official_language c2 |
| where c1.id = c2.capital |
| and c1.id != c2.id |
| ), |
| alleuropeanlanguages as |
| (select c.COUNTRY,c.CITY,c.CAPITAL,c.OFFICIAL_LANGUAGE |
| from capital_official_language c, country |
| where c.COUNTRY = country.name |
| and country.continent = 'Europe' |
| ) |
| select code,COUNTRY,CITY,alleuropeanlanguages.CAPITAL,OFFICIAL_LANGUAGE from alleuropeanlanguages,country |
| where alleuropeanlanguages.COUNTRY = country.name |
| and alleuropeanlanguages.city in (select CITY from city_official_language) |
| and alleuropeanlanguages.OFFICIAL_LANGUAGE IN (select OFFICIAL_LANGUAGE from capital_official_language) |
| order by code,country,city,official_language |
| limit 100; |
| code | country | city | capital | official_language |
| ------+------------------------+--------------+---------------------+------------------- |
| AUT | Austria | Graz | Wien | German |
| AUT | Austria | Innsbruck | Wien | German |
| AUT | Austria | Klagenfurt | Wien | German |
| AUT | Austria | Linz | Wien | German |
| AUT | Austria | Salzburg | Wien | German |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | French |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | French |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | French |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | German |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | German |
| BEL | Belgium | Antwerpen | Bruxelles [Brussel] | German |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | French |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | French |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | French |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | German |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | German |
| BEL | Belgium | Brugge | Bruxelles [Brussel] | German |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | French |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | French |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | French |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | German |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | German |
| BEL | Belgium | Charleroi | Bruxelles [Brussel] | German |
| BEL | Belgium | Gent | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Gent | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Gent | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Gent | Bruxelles [Brussel] | French |
| BEL | Belgium | Gent | Bruxelles [Brussel] | French |
| BEL | Belgium | Gent | Bruxelles [Brussel] | French |
| BEL | Belgium | Gent | Bruxelles [Brussel] | German |
| BEL | Belgium | Gent | Bruxelles [Brussel] | German |
| BEL | Belgium | Gent | Bruxelles [Brussel] | German |
| BEL | Belgium | Liege | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Liege | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Liege | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Liege | Bruxelles [Brussel] | French |
| BEL | Belgium | Liege | Bruxelles [Brussel] | French |
| BEL | Belgium | Liege | Bruxelles [Brussel] | French |
| BEL | Belgium | Liege | Bruxelles [Brussel] | German |
| BEL | Belgium | Liege | Bruxelles [Brussel] | German |
| BEL | Belgium | Liege | Bruxelles [Brussel] | German |
| BEL | Belgium | Mons | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Mons | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Mons | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Mons | Bruxelles [Brussel] | French |
| BEL | Belgium | Mons | Bruxelles [Brussel] | French |
| BEL | Belgium | Mons | Bruxelles [Brussel] | French |
| BEL | Belgium | Mons | Bruxelles [Brussel] | German |
| BEL | Belgium | Mons | Bruxelles [Brussel] | German |
| BEL | Belgium | Mons | Bruxelles [Brussel] | German |
| BEL | Belgium | Namur | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Namur | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Namur | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Namur | Bruxelles [Brussel] | French |
| BEL | Belgium | Namur | Bruxelles [Brussel] | French |
| BEL | Belgium | Namur | Bruxelles [Brussel] | French |
| BEL | Belgium | Namur | Bruxelles [Brussel] | German |
| BEL | Belgium | Namur | Bruxelles [Brussel] | German |
| BEL | Belgium | Namur | Bruxelles [Brussel] | German |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | Dutch |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | French |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | French |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | French |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | German |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | German |
| BEL | Belgium | Schaerbeek | Bruxelles [Brussel] | German |
| BGR | Bulgaria | Burgas | Sofija | Bulgariana |
| BGR | Bulgaria | Dobric | Sofija | Bulgariana |
| BGR | Bulgaria | Gumen | Sofija | Bulgariana |
| BGR | Bulgaria | Pleven | Sofija | Bulgariana |
| BGR | Bulgaria | Plovdiv | Sofija | Bulgariana |
| BGR | Bulgaria | Ruse | Sofija | Bulgariana |
| BGR | Bulgaria | Sliven | Sofija | Bulgariana |
| BGR | Bulgaria | Stara Zagora | Sofija | Bulgariana |
| BGR | Bulgaria | Varna | Sofija | Bulgariana |
| BIH | Bosnia and Herzegovina | Banja Luka | Sarajevo | Serbo-Croatian |
| BIH | Bosnia and Herzegovina | Zenica | Sarajevo | Serbo-Croatian |
| BLR | Belarus | Baranovitdi | Minsk | Belorussian |
| BLR | Belarus | Baranovitdi | Minsk | Belorussian |
| BLR | Belarus | Baranovitdi | Minsk | Russian |
| BLR | Belarus | Baranovitdi | Minsk | Russian |
| BLR | Belarus | Bobruisk | Minsk | Belorussian |
| BLR | Belarus | Bobruisk | Minsk | Belorussian |
| BLR | Belarus | Bobruisk | Minsk | Russian |
| BLR | Belarus | Bobruisk | Minsk | Russian |
| BLR | Belarus | Borisov | Minsk | Belorussian |
| BLR | Belarus | Borisov | Minsk | Belorussian |
| BLR | Belarus | Borisov | Minsk | Russian |
| BLR | Belarus | Borisov | Minsk | Russian |
| (100 rows) |
| |
| --query2 |
| with allcitystats as |
| ( select city.name CITY,city.id,country.name COUNTRY,city.district,city.population as CITY_POP |
| from |
| city,country |
| where city.countrycode = country.code |
| ), |
| alldistrictstats as |
| ( select allcitystats.district,allcitystats.COUNTRY,sum(CITY_POP) DISTRICT_POP, |
| count(CITY) as D_CITY_CNT |
| from allcitystats |
| group by allcitystats.district,allcitystats.COUNTRY |
| order by district,COUNTRY |
| ), |
| allcountrystats as |
| ( select alldistrictstats.COUNTRY,country.code,sum(D_CITY_CNT) C_CITY_CNT, |
| count(distinct countrylanguage.language) C_LANG_CNT |
| from alldistrictstats,country,countrylanguage |
| where alldistrictstats.COUNTRY = country.name |
| and country.code = countrylanguage.countrycode |
| group by COUNTRY,code |
| ), |
| asian_region_stats as |
| ( |
| select sum(FOO.C_CITY_CNT) REGION_CITY_CNT,sum(FOO.C_LANG_CNT) REGION_LANG_CNT,FOO.region |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,city.name CAPITAL |
| from allcountrystats,country,city |
| where allcountrystats.code = country.code |
| and country.capital = city.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Asia') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| select * from |
| ( |
| select REGION_CITY_CNT as CITY_CNT,REGION_LANG_CNT as LANG_CNT, region as IDENTIFIER from asian_region_stats |
| UNION ALL |
| ( |
| select sum(FOO.C_CITY_CNT) CITY_CNT,sum(FOO.C_LANG_CNT) LANG_CNT,FOO.region as IDENTIFIER |
| FROM |
| ( |
| select allcountrystats.code,allcountrystats.COUNTRY,C_CITY_CNT,C_LANG_CNT,country.region,allcitystats.CITY CAPITAL |
| from allcountrystats,country,allcitystats |
| where allcountrystats.code = country.code |
| and country.capital = allcitystats.id |
| and C_CITY_CNT/C_LANG_CNT > 1 |
| and country.continent = 'Europe') FOO |
| ,allcountrystats,country |
| WHERE allcountrystats.code = country.code |
| and FOO.region = country.region |
| group by FOO.region order by FOO.region |
| ) |
| ) FOO1 |
| order by FOO1.lang_cnt,FOO1.identifier; |
| city_cnt | lang_cnt | identifier |
| ----------+----------+--------------------------- |
| 494 | 10 | British Islands |
| 159 | 48 | Baltic Countries |
| 1295 | 161 | Nordic Countries |
| 50176 | 264 | Eastern Asia |
| 9414 | 369 | Western Europe |
| 11880 | 450 | Southern Europe |
| 32900 | 610 | Eastern Europe |
| 29161 | 616 | Southeast Asia |
| 8568 | 792 | Middle East |
| 80388 | 1092 | Southern and Central Asia |
| (10 rows) |
| |
| -- queries using column lists for CTEs |
| -- query 1 use column list despite having no duplicate names |
| with capitals("C","ID","CAP") as |
| (select country.code,id,city.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital), |
| lang_total(LC,CC,CLC) as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| select country.name,"C","ID","CAP",lang_total.lc |
| from capitals,lang_total,country |
| where capitals."C" = country.code |
| and country.code = lang_total.cc; |
| name | C | ID | CAP | lc |
| ---------------------------------+-----+------+------------------+---- |
| Austria | AUT | 1523 | Wien | 8 |
| Venezuela | VEN | 3539 | Caracas | 3 |
| Russian Federation | RUS | 3580 | Moscow | 12 |
| Bosnia and Herzegovina | BIH | 201 | Sarajevo | 1 |
| Brazil | BRA | 211 | Brasilia | 5 |
| Madagascar | MDG | 2455 | Antananarivo | 2 |
| Mexico | MEX | 2515 | Ciudad de Mexico | 6 |
| Argentina | ARG | 69 | Buenos Aires | 3 |
| Azerbaijan | AZE | 144 | Baku | 4 |
| United States | USA | 3813 | Washington | 12 |
| Yugoslavia | YUG | 1792 | Beograd | 6 |
| Micronesia, Federated States of | FSM | 2689 | Palikir | 6 |
| Nigeria | NGA | 2754 | Abuja | 10 |
| Germany | DEU | 3068 | Berlin | 6 |
| India | IND | 1109 | New Delhi | 12 |
| (15 rows) |
| |
| -- query 2 Check case sensitivity for quoted names in column list. This should error out |
| with "lang_total"("LC",CC,CLC) as |
| ( select count(*) as lang_count,country.code,countrylanguage.countrycode |
| from country join countrylanguage on (country.code=countrylanguage.countrycode and governmentform='Federal Republic') |
| group by country.code,countrylanguage.countrycode order by country.code) |
| select LC from lang_total; |
| ERROR: column "lc" does not exist |
| LINE 5: select LC from lang_total; |
| ^ |
| -- query 3 use column list when there are duplicate names within the CTE |
| with capitals("CO_C","C_ID","CAPITAL",country) as |
| (select country.code,id,city.name,country.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital) |
| select "CO_C","C_ID","CAPITAL",COUNTRY from capitals where "CO_C"='SMR'; |
| CO_C | C_ID | CAPITAL | country |
| ------+------+------------+------------ |
| SMR | 3171 | San Marino | San Marino |
| (1 row) |
| |
| -- query4 use column list within another CTE |
| with capitals("CO_C","C_ID","CAPITAL",country) as |
| (select country.code,id,city.name,country.name from city,country |
| where city.countrycode = country.code AND city.id = country.capital), |
| south_asian_capitals(A_CO_C,"C_ID",A_C_NAME,A_CO_NAME) as |
| (select "CO_C","C_ID","CAPITAL",country from capitals,country where capitals."CO_C"=country.code and country.region = 'Southern and Central Asia') |
| select "a_co_c","C_ID",A_c_NaMe,"a_co_name" from south_asian_capitals order by A_CO_C;-- queries using CTEs in initplans and main plan |
| a_co_c | C_ID | a_c_name | a_co_name |
| --------+------+-----------+-------------- |
| AFG | 1 | Kabul | Afghanistan |
| BGD | 150 | Dhaka | Bangladesh |
| BTN | 192 | Thimphu | Bhutan |
| IND | 1109 | New Delhi | India |
| IRN | 1380 | Teheran | Iran |
| KAZ | 1864 | Astana | Kazakstan |
| KGZ | 2253 | Bishkek | Kyrgyzstan |
| LKA | 3217 | Colombo | Sri Lanka |
| MDV | 2463 | Male | Maldives |
| NPL | 2729 | Kathmandu | Nepal |
| PAK | 2831 | Islamabad | Pakistan |
| TJK | 3261 | Dushanbe | Tajikistan |
| TKM | 3419 | Ashgabat | Turkmenistan |
| UZB | 3503 | Toskent | Uzbekistan |
| (14 rows) |
| |
| --query1 using CTE in the select list(initplan) . One CTE using another CTE in it's initplan |
| with gnpstats as |
| ( |
| select REG_GNP/REG_OLD_GNP as GNP_INDEX,region from |
| (select sum(gnpold) as REG_OLD_GNP, |
| sum(gnp) as REG_GNP,region |
| from country |
| group by region) FOO |
| where (case when (REG_GNP/REG_OLD_GNP) > 0 then 1.2 * (REG_GNP/REG_OLD_GNP) else null end) between 0.5 and 1.5 |
| order by region |
| ), |
| gnp_index_compare as |
| ( |
| select (select max(GNP_INDEX) from gnpstats) M_GNP_IDX,(gnp/gnpold) as GNP_IDX,country.name from |
| country where country.continent = 'Asia' |
| ) |
| select (select min(GNP_IDX) from gnp_index_compare) MIN_COUNTRY_GNP_IDX, (select max(GNP_INDEX) from gnpstats) MAX_REG_GNP_IDX,city.name CAPITAL,country.name COUNTRY |
| from city,country where city.id = country.capital and country.continent='Europe'; |
| min_country_gnp_idx | max_reg_gnp_idx | capital | country |
| ------------------------+--------------------+-----------------------------------+------------------------------- |
| 0.39526143942847043283 | 1.2055929013175585 | Gibraltar | Gibraltar |
| 0.39526143942847043283 | 1.2055929013175585 | Longyearbyen | Svalbard and Jan Mayen |
| 0.39526143942847043283 | 1.2055929013175585 | Tallinn | Estonia |
| 0.39526143942847043283 | 1.2055929013175585 | Kyiv | Ukraine |
| 0.39526143942847043283 | 1.2055929013175585 | Riga | Latvia |
| 0.39526143942847043283 | 1.2055929013175585 | Vaduz | Liechtenstein |
| 0.39526143942847043283 | 1.2055929013175585 | Valletta | Malta |
| 0.39526143942847043283 | 1.2055929013175585 | Monaco-Ville | Monaco |
| 0.39526143942847043283 | 1.2055929013175585 | Ljubljana | Slovenia |
| 0.39526143942847043283 | 1.2055929013175585 | Tirana | Albania |
| 0.39526143942847043283 | 1.2055929013175585 | Luxembourg [Luxemburg/Letzebuerg] | Luxembourg |
| 0.39526143942847043283 | 1.2055929013175585 | Praha | Czech Republic |
| 0.39526143942847043283 | 1.2055929013175585 | Citta del Vaticano | Holy See (Vatican City State) |
| 0.39526143942847043283 | 1.2055929013175585 | London | United Kingdom |
| 0.39526143942847043283 | 1.2055929013175585 | Roma | Italy |
| 0.39526143942847043283 | 1.2055929013175585 | Beograd | Yugoslavia |
| 0.39526143942847043283 | 1.2055929013175585 | Athenai | Greece |
| 0.39526143942847043283 | 1.2055929013175585 | Zagreb | Croatia |
| 0.39526143942847043283 | 1.2055929013175585 | Warszawa | Poland |
| 0.39526143942847043283 | 1.2055929013175585 | Bucuresti | Romania |
| 0.39526143942847043283 | 1.2055929013175585 | Bratislava | Slovakia |
| 0.39526143942847043283 | 1.2055929013175585 | Wien | Austria |
| 0.39526143942847043283 | 1.2055929013175585 | Skopje | Macedonia |
| 0.39526143942847043283 | 1.2055929013175585 | Paris | France |
| 0.39526143942847043283 | 1.2055929013175585 | San Marino | San Marino |
| 0.39526143942847043283 | 1.2055929013175585 | Bern | Switzerland |
| 0.39526143942847043283 | 1.2055929013175585 | Moscow | Russian Federation |
| 0.39526143942847043283 | 1.2055929013175585 | Amsterdam | Netherlands |
| 0.39526143942847043283 | 1.2055929013175585 | Sofija | Bulgaria |
| 0.39526143942847043283 | 1.2055929013175585 | Dublin | Ireland |
| 0.39526143942847043283 | 1.2055929013175585 | Oslo | Norway |
| 0.39526143942847043283 | 1.2055929013175585 | Lisboa | Portugal |
| 0.39526143942847043283 | 1.2055929013175585 | Andorra la Vella | Andorra |
| 0.39526143942847043283 | 1.2055929013175585 | Bruxelles [Brussel] | Belgium |
| 0.39526143942847043283 | 1.2055929013175585 | Madrid | Spain |
| 0.39526143942847043283 | 1.2055929013175585 | Vilnius | Lithuania |
| 0.39526143942847043283 | 1.2055929013175585 | Stockholm | Sweden |
| 0.39526143942847043283 | 1.2055929013175585 | Berlin | Germany |
| 0.39526143942847043283 | 1.2055929013175585 | Helsinki [Helsingfors] | Finland |
| 0.39526143942847043283 | 1.2055929013175585 | Kobenhavn | Denmark |
| 0.39526143942847043283 | 1.2055929013175585 | Minsk | Belarus |
| 0.39526143942847043283 | 1.2055929013175585 | Sarajevo | Bosnia and Herzegovina |
| 0.39526143942847043283 | 1.2055929013175585 | Torshavn | Faroe Islands |
| 0.39526143942847043283 | 1.2055929013175585 | Reykjavik | Iceland |
| 0.39526143942847043283 | 1.2055929013175585 | Chisinau | Moldova |
| 0.39526143942847043283 | 1.2055929013175585 | Budapest | Hungary |
| (46 rows) |
| |
| --query2 using the CTE in the where clause(initplan) of the main query. One CTE using another CTE in it's where clause as it's initplan |
| with diversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) > 6) d |
| where d.countrycode = country.code and country.gnp > 100000), |
| notdiversecountries as |
| (select country.code,country.name,country.capital,d.CNT |
| from country, |
| (select countrylanguage.countrycode,count(*) as CNT from countrylanguage group by countrycode |
| HAVING count(*) < 3) d |
| where d.countrycode = country.code and country.gnp > 100000 |
| and d.CNT < (select max(CNT) from diversecountries)) |
| select LANG_CNT,name from |
| ( |
| select count(*) LANG_CNT,country.name,country.code from country,countrylanguage |
| where country.code = countrylanguage.countrycode and country.continent = 'North America' |
| group by country.name,country.code |
| ) FOO |
| where FOO.LANG_CNT between (select min(CNT) from notdiversecountries) AND (select max(CNT) from diversecountries); |
| lang_cnt | name |
| ----------+---------------------------------- |
| 4 | Aruba |
| 2 | El Salvador |
| 1 | Saint Pierre and Miquelon |
| 2 | Dominica |
| 2 | Jamaica |
| 6 | Panama |
| 3 | Virgin Islands, U.S. |
| 1 | Anguilla |
| 4 | Belize |
| 3 | Trinidad and Tobago |
| 1 | Cayman Islands |
| 2 | Bahamas |
| 2 | Dominican Republic |
| 2 | Greenland |
| 2 | Martinique |
| 2 | Saint Vincent and the Grenadines |
| 2 | Saint Kitts and Nevis |
| 4 | Nicaragua |
| 2 | Saint Lucia |
| 12 | United States |
| 12 | Canada |
| 3 | Netherlands Antilles |
| 6 | Mexico |
| 4 | Costa Rica |
| 1 | Turks and Caicos Islands |
| 2 | Puerto Rico |
| 1 | Virgin Islands, British |
| 5 | Guatemala |
| 1 | Cuba |
| 1 | Bermuda |
| 1 | Montserrat |
| 2 | Barbados |
| 2 | Haiti |
| 1 | Grenada |
| 2 | Guadeloupe |
| 4 | Honduras |
| 2 | Antigua and Barbuda |
| (37 rows) |
| |
| --query3 using CTE more than once in the same initplan and also more than once in the main query |
| with alleuropeanlanguages as |
| (select country.code,country.name COUNTRY, city.name CAPITAL, language, isofficial, percentage |
| FROM country,city,countrylanguage |
| WHERE country.code = countrylanguage.countrycode |
| and country.capital = city.id |
| and country.continent = 'Europe'), |
| all_official_languages as |
| ( |
| select country.code,country.name,alleuropeanlanguages.language,alleuropeanlanguages.percentage |
| from |
| country,alleuropeanlanguages |
| where country.code = alleuropeanlanguages.code and isofficial = 'True' |
| and country.governmentform NOT IN (select 'Commonwealth of the US' UNION ALL select 'Monarchy (Sultanate)' UNION ALL select 'Monarchy') |
| and country.gnp > (select min(gnpold) from country where country.region = 'Western Europe') |
| ) |
| SELECT avg(percentage),language |
| FROM |
| ( |
| select country.name,city.name,percentage,language |
| from country,city,all_official_languages |
| where country.code = all_official_languages.code and country.capital = city.id and country.continent = 'Europe' |
| UNION ALL |
| select country.name,city.name,percentage,language |
| from country,city,all_official_languages |
| where country.code = all_official_languages.code and country.capital = city.id and country.continent = 'Asia' |
| ) FOO |
| group by FOO.language |
| HAVING avg(percentage) >= |
| (select avg(percentage) from |
| ( select percentage from all_official_languages,country where country.code = all_official_languages.code and country.region = 'British Islands' |
| UNION |
| select percentage from all_official_languages,country where country.code = all_official_languages.code and country.region = 'Western Europe' |
| ) FOO ) |
| order by FOO.language; |
| avg | language |
| ------------------+---------------- |
| 97.9000015258789 | Albaniana |
| 65.5999984741211 | Belorussian |
| 83.1999969482422 | Bulgariana |
| 81.1999969482422 | Czech |
| 93.5 | Danish |
| 77.3999996185303 | Dutch |
| 65.9333348274231 | English |
| 65.3000030517578 | Estonian |
| 92.6999969482422 | Finnish |
| 56.5333335796992 | German |
| 98.5 | Greek |
| 98.5 | Hungarian |
| 95.6999969482422 | Icelandic |
| 50.8999991416931 | Italian |
| 55.0999984741211 | Latvian |
| 81.5999984741211 | Lithuanian |
| 64.4000015258789 | Luxembourgish |
| 66.5 | Macedonian |
| 95.8000030517578 | Maltese |
| 96.5999984741211 | Norwegian |
| 97.5999984741211 | Polish |
| 99 | Portuguese |
| 76.2999992370605 | Romanian |
| 59.2999992370605 | Russian |
| 90.0999984741211 | Serbo-Croatian |
| 85.5999984741211 | Slovak |
| 87.9000015258789 | Slovene |
| 74.4000015258789 | Spanish |
| 64.6999969482422 | Ukrainian |
| (29 rows) |
| |
| -- queries using deeply nested CTEs |
| -- query1 using a CTE at every subquery level |
| select avg(population),CITY |
| from |
| ( |
| with size0_cities(CITY,POPULATION) as (select city.name,city.population from city where city.population >= 100) |
| select CITY,POPULATION from |
| ( |
| with size1_cities(CITY,POPULATION) as ( select city,population from size0_cities where population >= 1000 ) |
| select CITY,POPULATION from |
| ( |
| with size2_cities(CITY,POPULATION) as (select city,population from size1_cities where population >= 10000) |
| select CITY,POPULATION from |
| ( |
| with size3_cities as (select city,population from size2_cities where population >= 20000) |
| select CITY,POPULATION from |
| ( |
| with size4_cities as (select city,population from size3_cities where population >= 50000) |
| select CITY,POPULATION from |
| ( |
| with size5_cities as (select city,population from size4_cities where population >= 80000) |
| select CITY,POPULATION from |
| ( |
| with size6_cities as (select city,population from size5_cities where population >= 150000) |
| select CITY,POPULATION from |
| ( |
| with size7_cities as (select city,population from size6_cities where population >= 200000) |
| select CITY,POPULATION from |
| ( |
| with size8_cities as (select city,population from size7_cities where population >= 250000) |
| select CITY,POPULATION from |
| ( |
| with size9_cities as (select city,population from size8_cities where population >= 300000) |
| select city,population from |
| ( |
| with size10_cities as (select city,population from size9_cities where population >= 6500000) |
| select CITY,POPULATION from |
| ( |
| with size11_cities as (select city,population from size10_cities where population >= 7000000) |
| select s1.city,s1.population from size11_cities s1,size10_cities s2 |
| ) FOO11 |
| ) FOO10 |
| ) FOO9 |
| ) FOO8 |
| ) FOO7 |
| ) FOO6 |
| ) FOO5 |
| ) FOO4 |
| )FOO3 |
| ) FOO2 |
| ) FOO1 order by city |
| ) FOO0 group by city order by city; |
| avg | city |
| -----------------------+------------------ |
| 8591309.000000000000 | Ciudad de Mexico |
| 7206704.000000000000 | Delhi |
| 8787958.000000000000 | Istanbul |
| 9604900.000000000000 | Jakarta |
| 9269265.000000000000 | Karachi |
| 7285000.000000000000 | London |
| 8389200.000000000000 | Moscow |
| 10500000.000000000000 | Mumbai (Bombay) |
| 8008278.000000000000 | New York |
| 7472000.000000000000 | Peking |
| 9968485.000000000000 | Sao Paulo |
| 9981619.000000000000 | Seoul |
| 9696300.000000000000 | Shanghai |
| 7980230.000000000000 | Tokyo |
| (14 rows) |
| |
| --query 2 deeply nested CTEs with shared scans in the plan |
| select avg(population),CITY |
| from |
| ( |
| with size0_cities(CITY,POPULATION) as (select city.name,city.population from city where city.population >= 100) |
| select CITY,POPULATION from |
| ( |
| with size1_cities(CITY,POPULATION) as ( select city,population from size0_cities where population >= 1000 ) |
| select CITY,POPULATION from |
| ( |
| with size2_cities(CITY,POPULATION) as (select city,population from size1_cities where population >= 10000) |
| select CITY,POPULATION from |
| ( |
| with size3_cities as (select city,population from size2_cities where population >= 20000) |
| select CITY,POPULATION from |
| ( |
| with size4_cities as (select city,population from size3_cities where population >= 50000) |
| select CITY,POPULATION from |
| ( |
| with size5_cities as (select city,population from size4_cities where population >= 80000) |
| select CITY,POPULATION from |
| ( |
| with size6_cities as (select city,population from size5_cities where population >= 150000) |
| select CITY,POPULATION from |
| ( |
| with size7_cities as (select city,population from size6_cities where population >= 200000) |
| select CITY,POPULATION from |
| ( |
| with size8_cities as (select city,population from size7_cities where population >= 250000) |
| select CITY,POPULATION from |
| ( |
| with size9_cities as (select city,population from size8_cities where population >= 300000) |
| select city,population from |
| ( |
| with size10_cities as (select city,population from size9_cities where population >= 6500000) |
| select CITY,POPULATION from |
| ( |
| with size11_cities as (select city,population from size10_cities where population >= 7000000) |
| select s1.city,s1.population from size11_cities s1,size10_cities s2 |
| ) FOO11 |
| ) FOO10 |
| ) FOO9 |
| ) FOO8 |
| ) FOO7 |
| ) FOO6 |
| ) FOO5 |
| ) FOO4 |
| )FOO3 |
| ) FOO2 |
| ) FOO1 order by city |
| ) FOO0 group by city order by city; |
| avg | city |
| -----------------------+------------------ |
| 8591309.000000000000 | Ciudad de Mexico |
| 7206704.000000000000 | Delhi |
| 8787958.000000000000 | Istanbul |
| 9604900.000000000000 | Jakarta |
| 9269265.000000000000 | Karachi |
| 7285000.000000000000 | London |
| 8389200.000000000000 | Moscow |
| 10500000.000000000000 | Mumbai (Bombay) |
| 8008278.000000000000 | New York |
| 7472000.000000000000 | Peking |
| 9968485.000000000000 | Sao Paulo |
| 9981619.000000000000 | Seoul |
| 9696300.000000000000 | Shanghai |
| 7980230.000000000000 | Tokyo |
| (14 rows) |
| |
| -- query 3 deeply nested CTEs using every CTE defined |
| select avg(population) avg_p,CITY |
| from |
| ( |
| with size0_cities(CITY,POPULATION) as (select city.name,city.population from city where city.population >= 350000) |
| select CITY,POPULATION from |
| ( |
| with size1_cities(CITY,POPULATION) as ( select city,population from size0_cities where population >= 360000 ) |
| select CITY,POPULATION from |
| ( |
| with size2_cities(CITY,POPULATION) as (select city,population from size1_cities where population >= 370000) |
| select CITY,POPULATION from |
| ( |
| with size3_cities as (select city,population from size2_cities where population >= 380000) |
| select CITY,POPULATION from |
| ( |
| with size4_cities as (select city,population from size3_cities where population >= 390000) |
| select CITY,POPULATION from |
| ( |
| with size5_cities as (select city,population from size4_cities where population >= 400000) |
| select CITY,POPULATION from |
| ( |
| with size6_cities as (select city,population from size5_cities where population >= 410000) |
| select CITY,POPULATION from |
| ( |
| with size7_cities as (select city,population from size6_cities where population >= 420000) |
| select CITY,POPULATION from |
| ( |
| with size8_cities as (select city,population from size7_cities where population >= 430000) |
| select CITY,POPULATION from |
| ( |
| with size9_cities as (select city,population from size8_cities where population >= 440000) |
| select city,population from |
| ( |
| with size10_cities as (select city,population from size9_cities where population >= 6500000) |
| select CITY,POPULATION from |
| ( |
| with size11_cities as (select city,population from size10_cities where population >= 7000000) |
| select s1.city,s1.population from size11_cities s1,size1_cities s2 |
| UNION |
| select s1.city,s1.population from size10_cities s1,size2_cities s2 |
| UNION |
| select s1.city,s1.population from size9_cities s1,size3_cities s2 |
| UNION |
| select s1.city,s1.population from size8_cities s1,size4_cities s2 |
| UNION |
| select s1.city,s1.population from size7_cities s1,size5_cities s2 |
| UNION |
| select s1.city,s1.population from size6_cities s1,size6_cities s2 |
| ) FOO11 |
| ) FOO10 |
| ) FOO9 |
| ) FOO8 |
| ) FOO7 |
| ) FOO6 |
| ) FOO5 |
| ) FOO4 |
| )FOO3 |
| ) FOO2 |
| ) FOO1 order by city |
| ) FOO0 group by city order by avg_p,city |
| LIMIT 20; |
| avg_p | city |
| ---------------------+---------------- |
| 410000.000000000000 | Port Harcourt |
| 410102.000000000000 | Alberton |
| 410407.000000000000 | Xiangfan |
| 410775.000000000000 | Pingdingshan |
| 411542.000000000000 | Bhubaneswar |
| 411822.000000000000 | General Santos |
| 412639.000000000000 | Kaunas |
| 415346.000000000000 | San Salvador |
| 415466.000000000000 | Panzhihua |
| 416100.000000000000 | al-Taif |
| 416289.000000000000 | Bikaner |
| 416428.000000000000 | Matamoros |
| 416474.000000000000 | Atlanta |
| 416988.000000000000 | Szczecin |
| 417517.000000000000 | Kisangani |
| 417597.000000000000 | Sialkot |
| 417610.000000000000 | Suez |
| 417748.000000000000 | Rasht |
| 417810.000000000000 | Kolwezi |
| 418624.000000000000 | Kirkuk |
| (20 rows) |
| |
| -- sanity tests with queries using CTEs in insert,update,delete and create |
| -- query 1 CTAS using CTE |
| create table bad_headofstates as |
| ( |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select OUTERMOST_FOO.*,bad_headofstates.headofstate from ( |
| select avg(population),region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| order by OUTERMOST_FOO.region,bad_headofstates.headofstate LIMIT 40 |
| ); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause. Creating a NULL policy entry. |
| select * from bad_headofstates order by region,headofstate; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------------------------- |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Fidel Castro Ruz |
| 744388.888888888889 | Caribbean | George W. Bush |
| 744388.888888888889 | Caribbean | Jacques Chirac |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Elisabeth II |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (40 rows) |
| |
| --query 2 insert using CTE |
| insert into bad_headofstates |
| ( |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select OUTERMOST_FOO.*,bad_headofstates.headofstate from ( |
| select avg(population),region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| order by OUTERMOST_FOO.region,bad_headofstates.headofstate LIMIT 40 |
| ); |
| select * from bad_headofstates order by region,headofstate; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------------------------- |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Beatrix |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Elisabeth II |
| 744388.888888888889 | Caribbean | Fidel Castro Ruz |
| 744388.888888888889 | Caribbean | Fidel Castro Ruz |
| 744388.888888888889 | Caribbean | George W. Bush |
| 744388.888888888889 | Caribbean | George W. Bush |
| 744388.888888888889 | Caribbean | Jacques Chirac |
| 744388.888888888889 | Caribbean | Jacques Chirac |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Elisabeth II |
| 2657500.000000000000 | Central America | Elisabeth II |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (80 rows) |
| |
| --query3 update using CTE |
| update bad_headofstates set region = cm.region FROM |
| ( |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select avg(OUTERMOST_FOO.AVG),OUTERMOST_FOO.region from ( |
| select avg(population) AVG,region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| and OUTERMOST_FOO.region = 'Central America' |
| group by OUTERMOST_FOO.region |
| order by OUTERMOST_FOO.region |
| ) cm |
| where bad_headofstates.region = 'Caribbean'; |
| |
| select * from bad_headofstates order by avg,region,headofstate; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------------------------- |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Beatrix |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Elisabeth II |
| 744388.888888888889 | Central America | Fidel Castro Ruz |
| 744388.888888888889 | Central America | Fidel Castro Ruz |
| 744388.888888888889 | Central America | George W. Bush |
| 744388.888888888889 | Central America | George W. Bush |
| 744388.888888888889 | Central America | Jacques Chirac |
| 744388.888888888889 | Central America | Jacques Chirac |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Arnoldo Aleman Lacayo |
| 2657500.000000000000 | Central America | Elisabeth II |
| 2657500.000000000000 | Central America | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (80 rows) |
| |
| --query4 delete using CTE |
| delete from bad_headofstates USING |
| ( |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select avg(OUTERMOST_FOO.AVG),OUTERMOST_FOO.region from ( |
| select avg(population) AVG,region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| and OUTERMOST_FOO.region = 'Central America' |
| group by OUTERMOST_FOO.region |
| order by OUTERMOST_FOO.region |
| ) as cm |
| where bad_headofstates.region = cm.region; |
| select * from bad_headofstates order by region,headofstate; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------------------------- |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 7651000.000000000000 | Central Africa | Idriss Deby |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Abdiqassim Salad Hassan |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | Bakili Muluzi |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | France-Albert Rene |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Isayas Afewerki [Isaias Afwerki] |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Ismail Omar Guelleh |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Jacques Chirac |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Paul Kagame |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Pierre Buyoya |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 5982809.523809523810 | Eastern Africa | Robert G. Mugabe |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (44 rows) |
| |
| -- delete using CTE in its subplan |
| delete from bad_headofstates where bad_headofstates.avg NOT IN |
| ( |
| with bad_headofstates as |
| ( |
| select country.code,country.name,country.headofstate,countrylanguage.language |
| from |
| country,countrylanguage |
| where country.code = countrylanguage.countrycode and countrylanguage.isofficial=true |
| and (country.gnp < country.gnpold or country.gnp < 3000) |
| ) |
| select OUTERMOST_FOO.AVG from ( |
| select avg(population) AVG,region from |
| ( |
| select FOO.*,bad_headofstates.headofstate,city.name |
| from |
| (select bad_headofstates.code,country.capital,country.region,country.population from |
| bad_headofstates,country where bad_headofstates.code = country.code) FOO, bad_headofstates,city |
| where FOO.code = bad_headofstates.code and FOO.capital = city.id) OUTER_FOO |
| group by region ) OUTERMOST_FOO,bad_headofstates,country |
| where country.code = bad_headofstates.code and country.region = OUTERMOST_FOO.region |
| and OUTERMOST_FOO.region = 'Australia and New Zealand' or OUTERMOST_FOO.region = 'Eastern Asia' |
| order by OUTERMOST_FOO.region |
| ); |
| select * from bad_headofstates order by region,headofstate; |
| avg | region | headofstate |
| -----------------------+---------------------------+---------------- |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 4550620.000000000000 | Australia and New Zealand | Elisabeth II |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Akihito |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Chen Shui-bian |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| 34288500.000000000000 | Eastern Asia | Jiang Zemin |
| (16 rows) |
| |
| drop table bad_headofstates; |
| -- queries with views using CTEs |
| -- view1 with multiple CTEs being used multiple times |
| create view view_with_shared_scans as |
| ( |
| with longlivingregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| avg(lifeexpectancy) as "REGION_LIFETIME",region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP",foo."REGION_LIFETIME"), |
| denseregions as |
| ( |
| select FOO.*,count(distinct language) as "lang_count", |
| sum(surfacearea) as "REGION_SURFACE_AREA" |
| from( |
| select |
| sum(population) as "REGION_POP", |
| sum(gnp) as "REGION_GNP", |
| region |
| from |
| country |
| group by region |
| ) FOO,countrylanguage,country |
| where |
| country.code = countrylanguage.countrycode |
| and FOO.region = country.region |
| and FOO."REGION_POP" != 0 |
| group by |
| FOO.region,foo."REGION_POP",foo."REGION_GNP" |
| order by sum(surfacearea)/foo."REGION_POP" desc), |
| allcountrystats as |
| ( select country.code,country.name,count(distinct city.id) CITY_CNT, |
| count(distinct countrylanguage.language) LANG_CNT |
| from country,city,countrylanguage |
| where country.code = city.countrycode |
| and country.code = countrylanguage.countrycode |
| group by country.code,country.name |
| ) |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1800 and 1850 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear between 1850 and 1900 |
| UNION ALL |
| select allcountrystats.CITY_CNT,allcountrystats.LANG_CNT,allcountrystats.name, |
| "REGION_SURFACE_AREA","REGION_LIFETIME",longlivingregions."REGION_POP",longlivingregions.lang_count,longlivingregions."REGION_GNP",longlivingregions.region |
| from longlivingregions,denseregions,allcountrystats,country |
| where longlivingregions.region = denseregions.region and allcountrystats.code = country.code and country.region = longlivingregions.region |
| and country.indepyear > 1900 |
| ); |
| \d+ view_with_shared_scans; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Non-default collation |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Queries on master-only tables |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Non-default collation |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Non-default collation |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Non-default collation |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Non-default collation |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Queries on master-only tables |
| View "qp_with_clause.view_with_shared_scans" |
| Column | Type | Collation | Nullable | Default | Storage | Description |
| ---------------------+------------------+-----------+----------+---------+----------+------------- |
| city_cnt | bigint | | | | plain | |
| lang_cnt | bigint | | | | plain | |
| name | text | | | | extended | |
| REGION_SURFACE_AREA | numeric | | | | main | |
| REGION_LIFETIME | double precision | | | | plain | |
| REGION_POP | bigint | | | | plain | |
| lang_count | bigint | | | | plain | |
| REGION_GNP | numeric | | | | main | |
| region | text | | | | extended | |
| View definition: |
| WITH longlivingregions AS ( |
| SELECT foo."REGION_POP", |
| foo."REGION_GNP", |
| foo."REGION_LIFETIME", |
| foo.region, |
| count(DISTINCT countrylanguage.language) AS lang_count |
| FROM ( SELECT sum(country_1.population) AS "REGION_POP", |
| sum(country_1.gnp) AS "REGION_GNP", |
| avg(country_1.lifeexpectancy) AS "REGION_LIFETIME", |
| country_1.region |
| FROM country country_1 |
| GROUP BY country_1.region) foo, |
| countrylanguage, |
| country |
| WHERE country.code = countrylanguage.countrycode AND foo.region = country.region |
| GROUP BY foo.region, foo."REGION_POP", foo."REGION_GNP", foo."REGION_LIFETIME" |
| ), denseregions AS ( |
| SELECT foo."REGION_POP", |
| foo."REGION_GNP", |
| foo.region, |
| count(DISTINCT countrylanguage.language) AS lang_count, |
| sum(country.surfacearea) AS "REGION_SURFACE_AREA" |
| FROM ( SELECT sum(country_1.population) AS "REGION_POP", |
| sum(country_1.gnp) AS "REGION_GNP", |
| country_1.region |
| FROM country country_1 |
| GROUP BY country_1.region) foo, |
| countrylanguage, |
| country |
| WHERE country.code = countrylanguage.countrycode AND foo.region = country.region AND foo."REGION_POP" <> 0 |
| GROUP BY foo.region, foo."REGION_POP", foo."REGION_GNP" |
| ORDER BY (sum(country.surfacearea) / foo."REGION_POP"::numeric) DESC |
| ), allcountrystats AS ( |
| SELECT country.code, |
| country.name, |
| count(DISTINCT city.id) AS city_cnt, |
| count(DISTINCT countrylanguage.language) AS lang_cnt |
| FROM country, |
| city, |
| countrylanguage |
| WHERE country.code = city.countrycode AND country.code = countrylanguage.countrycode |
| GROUP BY country.code, country.name |
| ) |
| SELECT allcountrystats.city_cnt, |
| allcountrystats.lang_cnt, |
| allcountrystats.name, |
| denseregions."REGION_SURFACE_AREA", |
| longlivingregions."REGION_LIFETIME", |
| longlivingregions."REGION_POP", |
| longlivingregions.lang_count, |
| longlivingregions."REGION_GNP", |
| longlivingregions.region |
| FROM longlivingregions, |
| denseregions, |
| allcountrystats, |
| country |
| WHERE longlivingregions.region = denseregions.region AND allcountrystats.code = country.code AND country.region = longlivingregions.region AND country.indepyear >= 1800 AND country.indepyear <= 1850 |
| UNION ALL |
| SELECT allcountrystats.city_cnt, |
| allcountrystats.lang_cnt, |
| allcountrystats.name, |
| denseregions."REGION_SURFACE_AREA", |
| longlivingregions."REGION_LIFETIME", |
| longlivingregions."REGION_POP", |
| longlivingregions.lang_count, |
| longlivingregions."REGION_GNP", |
| longlivingregions.region |
| FROM longlivingregions, |
| denseregions, |
| allcountrystats, |
| country |
| WHERE longlivingregions.region = denseregions.region AND allcountrystats.code = country.code AND country.region = longlivingregions.region AND country.indepyear >= 1850 AND country.indepyear <= 1900 |
| UNION ALL |
| SELECT allcountrystats.city_cnt, |
| allcountrystats.lang_cnt, |
| allcountrystats.name, |
| denseregions."REGION_SURFACE_AREA", |
| longlivingregions."REGION_LIFETIME", |
| longlivingregions."REGION_POP", |
| longlivingregions.lang_count, |
| longlivingregions."REGION_GNP", |
| longlivingregions.region |
| FROM longlivingregions, |
| denseregions, |
| allcountrystats, |
| country |
| WHERE longlivingregions.region = denseregions.region AND allcountrystats.code = country.code AND country.region = longlivingregions.region AND country.indepyear > 1900; |
| |
| select city_cnt,lang_cnt,name,region from view_with_shared_scans order by name LIMIT 50; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | region |
| ----------+----------+---------------------------------------+--------------------------- |
| 4 | 5 | Afghanistan | Southern and Central Asia |
| 1 | 3 | Albania | Southern Europe |
| 18 | 2 | Algeria | Northern Africa |
| 5 | 9 | Angola | Central Africa |
| 1 | 2 | Antigua and Barbuda | Caribbean |
| 57 | 3 | Argentina | South America |
| 3 | 2 | Armenia | Middle East |
| 14 | 8 | Australia | Australia and New Zealand |
| 6 | 8 | Austria | Western Europe |
| 4 | 4 | Azerbaijan | Middle East |
| 1 | 2 | Bahamas | Caribbean |
| 1 | 2 | Bahrain | Middle East |
| 24 | 7 | Bangladesh | Southern and Central Asia |
| 1 | 2 | Barbados | Caribbean |
| 16 | 4 | Belarus | Eastern Europe |
| 9 | 6 | Belgium | Western Europe |
| 2 | 4 | Belize | Central America |
| 4 | 7 | Benin | Western Africa |
| 1 | 3 | Bhutan | Southern and Central Asia |
| 8 | 4 | Bolivia | South America |
| 3 | 1 | Bosnia and Herzegovina | Southern Europe |
| 2 | 5 | Botswana | Southern Africa |
| 250 | 5 | Brazil | South America |
| 1 | 4 | Brunei | Southeast Asia |
| 10 | 4 | Bulgaria | Eastern Europe |
| 3 | 6 | Burkina Faso | Western Africa |
| 1 | 3 | Burundi | Eastern Africa |
| 3 | 4 | Cambodia | Southeast Asia |
| 7 | 8 | Cameroon | Central Africa |
| 49 | 12 | Canada | North America |
| 1 | 2 | Cape Verde | Western Africa |
| 1 | 6 | Central African Republic | Central Africa |
| 2 | 8 | Chad | Central Africa |
| 29 | 4 | Chile | South America |
| 38 | 5 | Colombia | South America |
| 1 | 5 | Comoros | Eastern Africa |
| 2 | 6 | Congo | Central Africa |
| 18 | 10 | Congo, The Democratic Republic of the | Central Africa |
| 1 | 4 | Costa Rica | Central America |
| 5 | 5 | Cote deIvoire | Western Africa |
| 4 | 2 | Croatia | Southern Europe |
| 14 | 1 | Cuba | Caribbean |
| 2 | 2 | Cyprus | Middle East |
| 10 | 8 | Czech Republic | Eastern Europe |
| 1 | 3 | Djibouti | Eastern Africa |
| 1 | 2 | Dominica | Caribbean |
| 6 | 2 | Dominican Republic | Caribbean |
| 15 | 2 | Ecuador | South America |
| 37 | 2 | Egypt | Northern Africa |
| 7 | 2 | El Salvador | Central America |
| (50 rows) |
| |
| select city_cnt,lang_cnt,name,"REGION_POP","REGION_GNP",region from view_with_shared_scans where region = 'Eastern Europe'; |
| INFO: GPORCA failed to produce a plan, falling back to Postgres-based planner |
| DETAIL: Falling back to Postgres-based planner because GPORCA does not support the following feature: Multiple Distinct Qualified Aggregates are disabled in the optimizer |
| city_cnt | lang_cnt | name | REGION_POP | REGION_GNP | region |
| ----------+----------+--------------------+------------+------------+---------------- |
| 189 | 12 | Russian Federation | 307026000 | 659980.00 | Eastern Europe |
| 3 | 5 | Slovakia | 307026000 | 659980.00 | Eastern Europe |
| 10 | 8 | Czech Republic | 307026000 | 659980.00 | Eastern Europe |
| 44 | 4 | Poland | 307026000 | 659980.00 | Eastern Europe |
| 16 | 4 | Belarus | 307026000 | 659980.00 | Eastern Europe |
| 10 | 4 | Bulgaria | 307026000 | 659980.00 | Eastern Europe |
| 29 | 6 | Romania | 307026000 | 659980.00 | Eastern Europe |
| 57 | 7 | Ukraine | 307026000 | 659980.00 | Eastern Europe |
| 9 | 6 | Hungary | 307026000 | 659980.00 | Eastern Europe |
| 4 | 5 | Moldova | 307026000 | 659980.00 | Eastern Europe |
| (10 rows) |
| |
| drop view view_with_shared_scans; |
| -- start_ignore |
| drop table if exists tbl87; |
| NOTICE: table "tbl87" does not exist, skipping |
| -- end_ignore |
| create table tbl87(code char(3), n numeric); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'code' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| insert into tbl87 values ('abc',1); |
| insert into tbl87 values ('xyz',2); |
| insert into tbl87 values ('def',3); |
| with cte as |
| ( |
| select code, n, x |
| from tbl87 |
| , (select 100 as x) d |
| ) |
| select code from tbl87 t where 1= (select count(*) from cte where cte.code::text=t.code::text or cte.code::text = t.code::text); |
| code |
| ------ |
| abc |
| xyz |
| def |
| (3 rows) |
| |
| with cte as |
| ( |
| select count(*) from |
| ( |
| select code, n, x |
| from tbl87 |
| , (select 100 as x) d |
| ) FOO |
| ) |
| select code from tbl87 t where 1= (select * from cte); |
| code |
| ------ |
| (0 rows) |
| |
| with cte as |
| ( |
| select count(*) from |
| ( |
| select code, n, x |
| from tbl87 |
| , (select 100 as x) d |
| ) FOO |
| ) |
| select code from tbl87 t where 1= (select count(*) from cte); |
| code |
| ------ |
| abc |
| xyz |
| def |
| (3 rows) |
| |
| --start_ignore |
| drop table if exists foo; |
| NOTICE: table "foo" does not exist, skipping |
| drop table if exists bar; |
| NOTICE: table "bar" does not exist, skipping |
| drop table if exists emp; |
| NOTICE: table "emp" does not exist, skipping |
| drop table if exists manager; |
| NOTICE: table "manager" does not exist, skipping |
| --end_ignore |
| ------------------------------------------------------------------------------------------------------------------------------- |
| CREATE TABLE foo (key INTEGER, value INTEGER); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'key' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| INSERT INTO foo SELECT i, i % 10 from generate_series(1, 100) i; |
| CREATE TABLE bar(bar_key INTEGER, bar_value INTEGER); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'bar_key' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| INSERT INTO bar SELECT i, i % 5 FROM generate_series(1, 1000) i; |
| SET enable_hashjoin = OFF; |
| SET enable_mergejoin = OFF; |
| SET enable_nestloop = ON; |
| ------------------- |
| -- QUERY 1 |
| ------------------- |
| -- Query has WITH clause |
| -- WITH clause subquery used once |
| -- The subquery in the WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key) |
| -- SELECT o.key, bar_value FROM o, bar |
| -- WHERE |
| -- o.key != bar_value |
| -- ORDER BY 1, 2 LIMIT 20; |
| WITH o AS (SELECT * FROM foo AS o_key) |
| SELECT o.key, bar_value FROM o, bar |
| WHERE |
| o.key != bar_value |
| ORDER BY 1, 2 LIMIT 20; |
| key | bar_value |
| -----+----------- |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| (20 rows) |
| |
| -- Query has WITH clause |
| -- WITH clause subquery used once |
| -- The subquery in the WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = ON; |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key) |
| -- SELECT o.key, bar_value FROM o, bar |
| -- WHERE |
| -- o.key != bar_value |
| -- ORDER BY 1, 2 LIMIT 20; |
| WITH o AS (SELECT * FROM foo AS o_key) |
| SELECT o.key, bar_value FROM o, bar |
| WHERE |
| o.key != bar_value |
| ORDER BY 1, 2 LIMIT 20; |
| key | bar_value |
| -----+----------- |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| (20 rows) |
| |
| ------------------- |
| -- Query 2, Query 3 |
| ------------------- |
| -- Query has WITH clause |
| -- WITH clause subquery used multiple times |
| -- The subquery in the WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| -- EXPLAIN |
| -- WITH o as (SELECT * FROM foo AS o_key) |
| -- SELECT o1.key, o2.value FROM o o1, o o2 |
| -- WHERE o1.key != o2.value ORDER BY 1, 2 DESC LIMIT 100; |
| WITH o as (SELECT * FROM foo AS o_key) |
| SELECT o1.key, o2.value FROM o o1, o o2 |
| WHERE o1.key != o2.value ORDER BY 1, 2 DESC LIMIT 100; |
| key | value |
| -----+------- |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| (100 rows) |
| |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo), |
| -- n AS (SELECT * FROM foo) |
| -- SELECT o.key , n.value |
| -- FROM |
| -- o JOIN n ON o.key = n.key |
| -- WHERE |
| -- o.key != n.value |
| -- ORDER BY 1, 2; |
| WITH o AS (SELECT * FROM foo), |
| n AS (SELECT * FROM foo) |
| SELECT o.key , n.value |
| FROM |
| o JOIN n ON o.key = n.key |
| WHERE |
| o.key != n.value |
| ORDER BY 1, 2; |
| key | value |
| -----+------- |
| 10 | 0 |
| 11 | 1 |
| 12 | 2 |
| 13 | 3 |
| 14 | 4 |
| 15 | 5 |
| 16 | 6 |
| 17 | 7 |
| 18 | 8 |
| 19 | 9 |
| 20 | 0 |
| 21 | 1 |
| 22 | 2 |
| 23 | 3 |
| 24 | 4 |
| 25 | 5 |
| 26 | 6 |
| 27 | 7 |
| 28 | 8 |
| 29 | 9 |
| 30 | 0 |
| 31 | 1 |
| 32 | 2 |
| 33 | 3 |
| 34 | 4 |
| 35 | 5 |
| 36 | 6 |
| 37 | 7 |
| 38 | 8 |
| 39 | 9 |
| 40 | 0 |
| 41 | 1 |
| 42 | 2 |
| 43 | 3 |
| 44 | 4 |
| 45 | 5 |
| 46 | 6 |
| 47 | 7 |
| 48 | 8 |
| 49 | 9 |
| 50 | 0 |
| 51 | 1 |
| 52 | 2 |
| 53 | 3 |
| 54 | 4 |
| 55 | 5 |
| 56 | 6 |
| 57 | 7 |
| 58 | 8 |
| 59 | 9 |
| 60 | 0 |
| 61 | 1 |
| 62 | 2 |
| 63 | 3 |
| 64 | 4 |
| 65 | 5 |
| 66 | 6 |
| 67 | 7 |
| 68 | 8 |
| 69 | 9 |
| 70 | 0 |
| 71 | 1 |
| 72 | 2 |
| 73 | 3 |
| 74 | 4 |
| 75 | 5 |
| 76 | 6 |
| 77 | 7 |
| 78 | 8 |
| 79 | 9 |
| 80 | 0 |
| 81 | 1 |
| 82 | 2 |
| 83 | 3 |
| 84 | 4 |
| 85 | 5 |
| 86 | 6 |
| 87 | 7 |
| 88 | 8 |
| 89 | 9 |
| 90 | 0 |
| 91 | 1 |
| 92 | 2 |
| 93 | 3 |
| 94 | 4 |
| 95 | 5 |
| 96 | 6 |
| 97 | 7 |
| 98 | 8 |
| 99 | 9 |
| 100 | 0 |
| (91 rows) |
| |
| -- Query has WITH clause |
| -- Subquery using WITH clause multiple times |
| -- The subquery in the WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH o AS (SELECT * FROM foo AS o_key) |
| -- SELECT o1.key, o2.value FROM o o1, o o2 |
| -- WHERE o1.key != o2.value ORDER BY 1, 2 DESC LIMIT 100; |
| WITH o AS (SELECT * FROM foo AS o_key) |
| SELECT o1.key, o2.value FROM o o1, o o2 |
| WHERE o1.key != o2.value ORDER BY 1, 2 DESC LIMIT 100; |
| key | value |
| -----+------- |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| (100 rows) |
| |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo), |
| -- n AS (SELECT * FROM foo) |
| -- SELECT o.key , n.value |
| -- FROM |
| -- o JOIN n ON o.key = n.key |
| -- WHERE |
| -- o.key != n.value |
| -- ORDER BY 1, 2; |
| WITH o AS (SELECT * FROM foo), |
| n AS (SELECT * FROM foo) |
| SELECT o.key , n.value |
| FROM |
| o JOIN n ON o.key = n.key |
| WHERE |
| o.key != n.value |
| ORDER BY 1, 2; |
| key | value |
| -----+------- |
| 10 | 0 |
| 11 | 1 |
| 12 | 2 |
| 13 | 3 |
| 14 | 4 |
| 15 | 5 |
| 16 | 6 |
| 17 | 7 |
| 18 | 8 |
| 19 | 9 |
| 20 | 0 |
| 21 | 1 |
| 22 | 2 |
| 23 | 3 |
| 24 | 4 |
| 25 | 5 |
| 26 | 6 |
| 27 | 7 |
| 28 | 8 |
| 29 | 9 |
| 30 | 0 |
| 31 | 1 |
| 32 | 2 |
| 33 | 3 |
| 34 | 4 |
| 35 | 5 |
| 36 | 6 |
| 37 | 7 |
| 38 | 8 |
| 39 | 9 |
| 40 | 0 |
| 41 | 1 |
| 42 | 2 |
| 43 | 3 |
| 44 | 4 |
| 45 | 5 |
| 46 | 6 |
| 47 | 7 |
| 48 | 8 |
| 49 | 9 |
| 50 | 0 |
| 51 | 1 |
| 52 | 2 |
| 53 | 3 |
| 54 | 4 |
| 55 | 5 |
| 56 | 6 |
| 57 | 7 |
| 58 | 8 |
| 59 | 9 |
| 60 | 0 |
| 61 | 1 |
| 62 | 2 |
| 63 | 3 |
| 64 | 4 |
| 65 | 5 |
| 66 | 6 |
| 67 | 7 |
| 68 | 8 |
| 69 | 9 |
| 70 | 0 |
| 71 | 1 |
| 72 | 2 |
| 73 | 3 |
| 74 | 4 |
| 75 | 5 |
| 76 | 6 |
| 77 | 7 |
| 78 | 8 |
| 79 | 9 |
| 80 | 0 |
| 81 | 1 |
| 82 | 2 |
| 83 | 3 |
| 84 | 4 |
| 85 | 5 |
| 86 | 6 |
| 87 | 7 |
| 88 | 8 |
| 89 | 9 |
| 90 | 0 |
| 91 | 1 |
| 92 | 2 |
| 93 | 3 |
| 94 | 4 |
| 95 | 5 |
| 96 | 6 |
| 97 | 7 |
| 98 | 8 |
| 99 | 9 |
| 100 | 0 |
| (91 rows) |
| |
| ------------------- |
| -- Query 4, Query 5 |
| ------------------- |
| -- Query has WITH clause |
| -- Subquery with nested WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * FROM o WHERE o.key < 50) |
| -- SELECT m.key, bar_value FROM m, bar |
| -- WHERE |
| -- m.key != bar_value |
| -- ORDER BY 1, 2 LIMIT 20; |
| WITH o AS (SELECT * FROM foo AS o_key), |
| m AS (SELECT * FROM o WHERE o.key < 50) |
| SELECT m.key, bar_value FROM m, bar |
| WHERE |
| m.key != bar_value |
| ORDER BY 1, 2 LIMIT 20; |
| key | bar_value |
| -----+----------- |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| (20 rows) |
| |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * FROM o WHERE o.key < 50) |
| -- SELECT m1.key, m2.value FROM m m1, m m2 |
| -- WHERE m1.key != m2.value |
| -- ORDER BY 1, 2 DESC LIMIT 100; |
| WITH o AS (SELECT * FROM foo AS o_key), |
| m AS (SELECT * FROM o WHERE o.key < 50) |
| SELECT m1.key, m2.value FROM m m1, m m2 |
| WHERE m1.key != m2.value |
| ORDER BY 1, 2 DESC LIMIT 100; |
| key | value |
| -----+------- |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 0 |
| 2 | 0 |
| 2 | 0 |
| 2 | 0 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 7 |
| 3 | 7 |
| (100 rows) |
| |
| -- Query has WITH clause |
| -- Subquery with nested WITH clause appears under a NLJ in the query plan |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH o AS (SELECT * FROM foo AS o_key), |
| --m AS (SELECT * FROM o WHERE o.key < 50) |
| -- SELECT m.key, bar_value FROM m, bar |
| --WHERE |
| --m.key != bar_value |
| --ORDER BY 1, 2 LIMIT 20; |
| WITH o AS (SELECT * FROM foo AS o_key), |
| m AS (SELECT * FROM o WHERE o.key < 50) |
| SELECT m.key, bar_value FROM m, bar |
| WHERE |
| m.key != bar_value |
| ORDER BY 1, 2 LIMIT 20; |
| key | bar_value |
| -----+----------- |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| (20 rows) |
| |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * from o WHERE o.key < 50) |
| -- SELECT m1.key, m2.value FROM m m1, m m2 |
| -- WHERE m1.key != m2.value |
| -- ORDER BY 1, 2 DESC LIMIT 100; |
| WITH o AS (SELECT * FROM foo AS o_key), |
| m AS (SELECT * from o WHERE o.key < 50) |
| SELECT m1.key, m2.value FROM m m1, m m2 |
| WHERE m1.key != m2.value |
| ORDER BY 1, 2 DESC LIMIT 100; |
| key | value |
| -----+------- |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 9 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 8 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 7 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 6 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 5 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 4 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 3 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 2 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 1 | 0 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 9 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 8 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 7 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 6 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 5 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 4 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 3 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 1 |
| 2 | 0 |
| 2 | 0 |
| 2 | 0 |
| 2 | 0 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 9 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 8 |
| 3 | 7 |
| 3 | 7 |
| (100 rows) |
| |
| ------------------- |
| -- Query 6, Query 7 |
| ------------------- |
| -- Query has WITH clause |
| -- Subquery with nested WITH clause appears under a NLJ in the query plan |
| -- Nested WITH clause uses NLJ in query plan |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * FROM o join bar ON o.key < bar_value) |
| -- SELECT m.value, m.bar_key, bar.bar_value |
| -- FROM m, bar |
| -- WHERE m.bar_key = bar.bar_value |
| -- ORDER BY 2, 1 DESC LIMIT 100; |
| -- |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * FROM o join bar ON o.key < bar_value) |
| -- SELECT m1.key, m2.value FROM m m1, m m2 |
| -- WHERE m1.key != m2.value |
| -- ORDER BY 1, 2 DESC LIMIT 100; |
| -- Query has WITH clause |
| -- Subquery with nested WITH clause appears under a NLJ in the query plan |
| -- Nested WITH clause involves join in query plan |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH o AS (SELECT * FROM foo AS o_key), |
| --m AS (SELECT * FROM o join bar ON o.key < bar_value) |
| -- SELECT m.value, m.bar_key, bar.bar_value |
| -- FROM m, bar |
| -- WHERE m.bar_key = bar.bar_value |
| -- ORDER BY 2, 1 DESC LIMIT 100; |
| -- EXPLAIN |
| -- WITH o AS (SELECT * FROM foo AS o_key), |
| -- m AS (SELECT * FROM o join bar ON o.key < bar_value) |
| -- SELECT m1.key, m2.value FROM m m1, m m2 |
| -- WHERE m1.key != m2.value |
| -- ORDER BY 1, 2 DESC LIMIT 100; |
| ------------------------------------------------------------------------------------------------------------------------------- |
| CREATE TABLE emp (ename CHARACTER VARYING(50), empno INTEGER, mgr INTEGER, deptno INTEGER); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'ename' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| INSERT INTO emp SELECT i || 'NAME', i, i%6, i%16 FROM generate_series(1, 100) i; |
| CREATE TABLE manager (dept_mgr_no INTEGER); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'dept_mgr_no' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| INSERT INTO manager SELECT i FROM generate_series(1, 100) i; |
| SET enable_hashjoin = OFF; |
| SET enable_mergejoin = OFF; |
| SET enable_nestloop = ON; |
| ------------------- |
| -- Query 8 |
| ------------------- |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| -- EXPLAIN |
| -- WITH dept_count AS |
| -- (SELECT deptno, COUNT(*) AS dept_count FROM emp |
| -- GROUP BY deptno) SELECT e.ename AS employee_name, |
| -- dc.dept_count AS emp_dept_count |
| -- FROM emp e, dept_count dc |
| -- WHERE e.deptno = dc.deptno |
| -- ORDER BY 1, 2 DESC LIMIT 20; |
| WITH dept_count AS |
| (SELECT deptno, COUNT(*) AS dept_count FROM emp |
| GROUP BY deptno) SELECT e.ename AS employee_name, |
| dc.dept_count AS emp_dept_count |
| FROM emp e, dept_count dc |
| WHERE e.deptno = dc.deptno |
| ORDER BY 1, 2 DESC LIMIT 20; |
| employee_name | emp_dept_count |
| ---------------+---------------- |
| 100NAME | 7 |
| 10NAME | 6 |
| 11NAME | 6 |
| 12NAME | 6 |
| 13NAME | 6 |
| 14NAME | 6 |
| 15NAME | 6 |
| 16NAME | 6 |
| 17NAME | 7 |
| 18NAME | 7 |
| 19NAME | 7 |
| 1NAME | 7 |
| 20NAME | 7 |
| 21NAME | 6 |
| 22NAME | 6 |
| 23NAME | 6 |
| 24NAME | 6 |
| 25NAME | 6 |
| 26NAME | 6 |
| 27NAME | 6 |
| (20 rows) |
| |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH dept_count AS |
| -- (SELECT deptno, COUNT(*) AS dept_count FROM emp |
| -- GROUP BY deptno) SELECT e.ename AS employee_name, |
| -- dc.dept_count AS emp_dept_count |
| --FROM emp e, dept_count dc |
| --WHERE e.deptno = dc.deptno |
| --ORDER BY 1, 2 DESC LIMIT 20; |
| WITH dept_count AS |
| (SELECT deptno, COUNT(*) AS dept_count FROM emp |
| GROUP BY deptno) SELECT e.ename AS employee_name, |
| dc.dept_count AS emp_dept_count |
| FROM emp e, dept_count dc |
| WHERE e.deptno = dc.deptno |
| ORDER BY 1, 2 DESC LIMIT 20; |
| employee_name | emp_dept_count |
| ---------------+---------------- |
| 100NAME | 7 |
| 10NAME | 6 |
| 11NAME | 6 |
| 12NAME | 6 |
| 13NAME | 6 |
| 14NAME | 6 |
| 15NAME | 6 |
| 16NAME | 6 |
| 17NAME | 7 |
| 18NAME | 7 |
| 19NAME | 7 |
| 1NAME | 7 |
| 20NAME | 7 |
| 21NAME | 6 |
| 22NAME | 6 |
| 23NAME | 6 |
| 24NAME | 6 |
| 25NAME | 6 |
| 26NAME | 6 |
| 27NAME | 6 |
| (20 rows) |
| |
| ------------------- |
| -- Query 9 |
| ------------------- |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| --EXPLAIN |
| --WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno) |
| --SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name, |
| -- dc2.dept_count AS mgr_dept_count |
| --FROM emp e, |
| -- dept_count dc1, |
| -- emp m, |
| -- dept_count dc2 |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno AND |
| -- m.deptno = dc2.deptno |
| --ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno) |
| SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name, |
| dc2.dept_count AS mgr_dept_count |
| FROM emp e, |
| dept_count dc1, |
| emp m, |
| dept_count dc2 |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno AND |
| m.deptno = dc2.deptno |
| ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| employee_name | emp_dept_count | manager_name | mgr_dept_count |
| ---------------+----------------+--------------+---------------- |
| 100NAME | 7 | 4NAME | 7 |
| 10NAME | 6 | 4NAME | 7 |
| 11NAME | 6 | 5NAME | 6 |
| 13NAME | 6 | 1NAME | 7 |
| 14NAME | 6 | 2NAME | 7 |
| 15NAME | 6 | 3NAME | 7 |
| 16NAME | 6 | 4NAME | 7 |
| 17NAME | 7 | 5NAME | 6 |
| 19NAME | 7 | 1NAME | 7 |
| 1NAME | 7 | 1NAME | 7 |
| 20NAME | 7 | 2NAME | 7 |
| 21NAME | 6 | 3NAME | 7 |
| 22NAME | 6 | 4NAME | 7 |
| 23NAME | 6 | 5NAME | 6 |
| 25NAME | 6 | 1NAME | 7 |
| 26NAME | 6 | 2NAME | 7 |
| 27NAME | 6 | 3NAME | 7 |
| 28NAME | 6 | 4NAME | 7 |
| 29NAME | 6 | 5NAME | 6 |
| 2NAME | 7 | 2NAME | 7 |
| 31NAME | 6 | 1NAME | 7 |
| 32NAME | 6 | 2NAME | 7 |
| 33NAME | 7 | 3NAME | 7 |
| 34NAME | 7 | 4NAME | 7 |
| 35NAME | 7 | 5NAME | 6 |
| (25 rows) |
| |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno) |
| --SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name, |
| -- dc2.dept_count AS mgr_dept_count |
| --FROM emp e, |
| -- dept_count dc1, |
| -- emp m, |
| -- dept_count dc2 |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno AND |
| -- m.deptno = dc2.deptno |
| --ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno) |
| SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name, |
| dc2.dept_count AS mgr_dept_count |
| FROM emp e, |
| dept_count dc1, |
| emp m, |
| dept_count dc2 |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno AND |
| m.deptno = dc2.deptno |
| ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| employee_name | emp_dept_count | manager_name | mgr_dept_count |
| ---------------+----------------+--------------+---------------- |
| 100NAME | 7 | 4NAME | 7 |
| 10NAME | 6 | 4NAME | 7 |
| 11NAME | 6 | 5NAME | 6 |
| 13NAME | 6 | 1NAME | 7 |
| 14NAME | 6 | 2NAME | 7 |
| 15NAME | 6 | 3NAME | 7 |
| 16NAME | 6 | 4NAME | 7 |
| 17NAME | 7 | 5NAME | 6 |
| 19NAME | 7 | 1NAME | 7 |
| 1NAME | 7 | 1NAME | 7 |
| 20NAME | 7 | 2NAME | 7 |
| 21NAME | 6 | 3NAME | 7 |
| 22NAME | 6 | 4NAME | 7 |
| 23NAME | 6 | 5NAME | 6 |
| 25NAME | 6 | 1NAME | 7 |
| 26NAME | 6 | 2NAME | 7 |
| 27NAME | 6 | 3NAME | 7 |
| 28NAME | 6 | 4NAME | 7 |
| 29NAME | 6 | 5NAME | 6 |
| 2NAME | 7 | 2NAME | 7 |
| 31NAME | 6 | 1NAME | 7 |
| 32NAME | 6 | 2NAME | 7 |
| 33NAME | 7 | 3NAME | 7 |
| 34NAME | 7 | 4NAME | 7 |
| 35NAME | 7 | 5NAME | 6 |
| (25 rows) |
| |
| ------------------- |
| -- Query 10 |
| ------------------- |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| --EXPLAIN |
| --WITH dept_count AS |
| -- (SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno) SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name |
| --FROM emp e, |
| -- dept_count dc1, emp m |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno |
| --ORDER BY 1, 2, 3 ASC LIMIT 20; |
| WITH dept_count AS |
| (SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno) SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name |
| FROM emp e, |
| dept_count dc1, emp m |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno |
| ORDER BY 1, 2, 3 ASC LIMIT 20; |
| employee_name | emp_dept_count | manager_name |
| ---------------+----------------+-------------- |
| 100NAME | 7 | 4NAME |
| 10NAME | 6 | 4NAME |
| 11NAME | 6 | 5NAME |
| 13NAME | 6 | 1NAME |
| 14NAME | 6 | 2NAME |
| 15NAME | 6 | 3NAME |
| 16NAME | 6 | 4NAME |
| 17NAME | 7 | 5NAME |
| 19NAME | 7 | 1NAME |
| 1NAME | 7 | 1NAME |
| 20NAME | 7 | 2NAME |
| 21NAME | 6 | 3NAME |
| 22NAME | 6 | 4NAME |
| 23NAME | 6 | 5NAME |
| 25NAME | 6 | 1NAME |
| 26NAME | 6 | 2NAME |
| 27NAME | 6 | 3NAME |
| 28NAME | 6 | 4NAME |
| 29NAME | 6 | 5NAME |
| 2NAME | 7 | 2NAME |
| (20 rows) |
| |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH dept_count AS |
| -- (SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno) SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name |
| --FROM emp e, |
| -- dept_count dc1, emp m |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno |
| --ORDER BY 1, 2, 3 ASC LIMIT 20; |
| WITH dept_count AS |
| (SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno) SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name |
| FROM emp e, |
| dept_count dc1, emp m |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno |
| ORDER BY 1, 2, 3 ASC LIMIT 20; |
| employee_name | emp_dept_count | manager_name |
| ---------------+----------------+-------------- |
| 100NAME | 7 | 4NAME |
| 10NAME | 6 | 4NAME |
| 11NAME | 6 | 5NAME |
| 13NAME | 6 | 1NAME |
| 14NAME | 6 | 2NAME |
| 15NAME | 6 | 3NAME |
| 16NAME | 6 | 4NAME |
| 17NAME | 7 | 5NAME |
| 19NAME | 7 | 1NAME |
| 1NAME | 7 | 1NAME |
| 20NAME | 7 | 2NAME |
| 21NAME | 6 | 3NAME |
| 22NAME | 6 | 4NAME |
| 23NAME | 6 | 5NAME |
| 25NAME | 6 | 1NAME |
| 26NAME | 6 | 2NAME |
| 27NAME | 6 | 3NAME |
| 28NAME | 6 | 4NAME |
| 29NAME | 6 | 5NAME |
| 2NAME | 7 | 2NAME |
| (20 rows) |
| |
| ------------------- |
| -- Query 11 |
| ------------------- |
| -- The sharing of CTE is disabled |
| SET gp_cte_sharing = OFF; |
| --EXPLAIN |
| --WITH dept_count AS (SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno), |
| --mgr_count AS (SELECT dept_mgr_no, COUNT(*) AS mgr_count |
| -- FROM manager |
| -- GROUP BY dept_mgr_no) |
| --SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name, |
| -- dmc1.mgr_count AS mgr_dept_count |
| --FROM emp e, |
| -- dept_count dc1, emp m, |
| -- mgr_count dmc1 |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno AND |
| -- m.deptno = dmc1.dept_mgr_no |
| --ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| WITH dept_count AS (SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno), |
| mgr_count AS (SELECT dept_mgr_no, COUNT(*) AS mgr_count |
| FROM manager |
| GROUP BY dept_mgr_no) |
| SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name, |
| dmc1.mgr_count AS mgr_dept_count |
| FROM emp e, |
| dept_count dc1, emp m, |
| mgr_count dmc1 |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno AND |
| m.deptno = dmc1.dept_mgr_no |
| ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| employee_name | emp_dept_count | manager_name | mgr_dept_count |
| ---------------+----------------+--------------+---------------- |
| 100NAME | 7 | 4NAME | 1 |
| 10NAME | 6 | 4NAME | 1 |
| 11NAME | 6 | 5NAME | 1 |
| 13NAME | 6 | 1NAME | 1 |
| 14NAME | 6 | 2NAME | 1 |
| 15NAME | 6 | 3NAME | 1 |
| 16NAME | 6 | 4NAME | 1 |
| 17NAME | 7 | 5NAME | 1 |
| 19NAME | 7 | 1NAME | 1 |
| 1NAME | 7 | 1NAME | 1 |
| 20NAME | 7 | 2NAME | 1 |
| 21NAME | 6 | 3NAME | 1 |
| 22NAME | 6 | 4NAME | 1 |
| 23NAME | 6 | 5NAME | 1 |
| 25NAME | 6 | 1NAME | 1 |
| 26NAME | 6 | 2NAME | 1 |
| 27NAME | 6 | 3NAME | 1 |
| 28NAME | 6 | 4NAME | 1 |
| 29NAME | 6 | 5NAME | 1 |
| 2NAME | 7 | 2NAME | 1 |
| 31NAME | 6 | 1NAME | 1 |
| 32NAME | 6 | 2NAME | 1 |
| 33NAME | 7 | 3NAME | 1 |
| 34NAME | 7 | 4NAME | 1 |
| 35NAME | 7 | 5NAME | 1 |
| (25 rows) |
| |
| -- The sharing of CTE is enabled |
| SET gp_cte_sharing = ON; |
| --EXPLAIN |
| --WITH dept_count AS (SELECT deptno, COUNT(*) AS dept_count |
| -- FROM emp |
| -- GROUP BY deptno), |
| --mgr_count AS (SELECT dept_mgr_no, COUNT(*) AS mgr_count |
| -- FROM manager |
| -- GROUP BY dept_mgr_no) |
| --SELECT e.ename AS employee_name, |
| -- dc1.dept_count AS emp_dept_count, |
| -- m.ename AS manager_name, |
| -- dmc1.mgr_count AS mgr_dept_count |
| --FROM emp e, |
| -- dept_count dc1, emp m, |
| -- mgr_count dmc1 |
| --WHERE e.deptno = dc1.deptno AND |
| -- e.mgr = m.empno AND |
| -- m.deptno = dmc1.dept_mgr_no |
| --ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| WITH dept_count AS (SELECT deptno, COUNT(*) AS dept_count |
| FROM emp |
| GROUP BY deptno), |
| mgr_count AS (SELECT dept_mgr_no, COUNT(*) AS mgr_count |
| FROM manager |
| GROUP BY dept_mgr_no) |
| SELECT e.ename AS employee_name, |
| dc1.dept_count AS emp_dept_count, |
| m.ename AS manager_name, |
| dmc1.mgr_count AS mgr_dept_count |
| FROM emp e, |
| dept_count dc1, emp m, |
| mgr_count dmc1 |
| WHERE e.deptno = dc1.deptno AND |
| e.mgr = m.empno AND |
| m.deptno = dmc1.dept_mgr_no |
| ORDER BY 1, 2, 3, 4 DESC LIMIT 25; |
| employee_name | emp_dept_count | manager_name | mgr_dept_count |
| ---------------+----------------+--------------+---------------- |
| 100NAME | 7 | 4NAME | 1 |
| 10NAME | 6 | 4NAME | 1 |
| 11NAME | 6 | 5NAME | 1 |
| 13NAME | 6 | 1NAME | 1 |
| 14NAME | 6 | 2NAME | 1 |
| 15NAME | 6 | 3NAME | 1 |
| 16NAME | 6 | 4NAME | 1 |
| 17NAME | 7 | 5NAME | 1 |
| 19NAME | 7 | 1NAME | 1 |
| 1NAME | 7 | 1NAME | 1 |
| 20NAME | 7 | 2NAME | 1 |
| 21NAME | 6 | 3NAME | 1 |
| 22NAME | 6 | 4NAME | 1 |
| 23NAME | 6 | 5NAME | 1 |
| 25NAME | 6 | 1NAME | 1 |
| 26NAME | 6 | 2NAME | 1 |
| 27NAME | 6 | 3NAME | 1 |
| 28NAME | 6 | 4NAME | 1 |
| 29NAME | 6 | 5NAME | 1 |
| 2NAME | 7 | 2NAME | 1 |
| 31NAME | 6 | 1NAME | 1 |
| 32NAME | 6 | 2NAME | 1 |
| 33NAME | 7 | 3NAME | 1 |
| 34NAME | 7 | 4NAME | 1 |
| 35NAME | 7 | 5NAME | 1 |
| (25 rows) |
| |
| -- Test that SharedInputScan within the same slice is always executed |
| set gp_cte_sharing=on; |
| -- start_ignore |
| CREATE TABLE car (a int, b int); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'a' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| CREATE TABLE zoo (c int, d int); |
| NOTICE: Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'c' as the Greenplum Database data distribution key for this table. |
| HINT: The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew. |
| insert into car select i, (i+1) from generate_series(1,10) i; |
| insert into zoo values (4,4); |
| -- end_ignore |
| WITH c as (SELECT sum(a) as a_sum, b FROM car GROUP BY b) |
| SELECT * FROM c as c1, zoo WHERE zoo.c != 4 AND c1.b = zoo.c |
| UNION ALL |
| SELECT * FROM c as c1, zoo WHERE zoo.c = c1.b; |
| a_sum | b | c | d |
| -------+---+---+--- |
| 3 | 4 | 4 | 4 |
| (1 row) |
| |
| -- Test that nested CTE generates a valid plan |
| EXPLAIN (COSTS OFF) WITH q AS (SELECT * FROM (WITH cte AS (SELECT * FROM car) SELECT * FROM car WHERE a > 7) t) SELECT * FROM q; |
| QUERY PLAN |
| ------------------------------------------ |
| Gather Motion 3:1 (slice1; segments: 3) |
| -> Seq Scan on car |
| Filter: (a > 7) |
| Optimizer: GPORCA |
| (4 rows) |
| |
| WITH q AS (SELECT * FROM (WITH cte AS (SELECT * FROM car) SELECT * FROM car WHERE a > 7) t) SELECT * FROM q; |
| a | b |
| ----+---- |
| 8 | 9 |
| 9 | 10 |
| 10 | 11 |
| (3 rows) |
| |
| -- start_ignore |
| drop schema qp_with_clause cascade; |
| NOTICE: drop cascades to table zoo |
| NOTICE: drop cascades to table car |
| NOTICE: drop cascades to table manager |
| NOTICE: drop cascades to table emp |
| NOTICE: drop cascades to table bar |
| NOTICE: drop cascades to table foo |
| NOTICE: drop cascades to table tbl87 |
| NOTICE: drop cascades to append only columnar table countrylanguage_co |
| NOTICE: drop cascades to append only columnar table country_co |
| NOTICE: drop cascades to append only columnar table city_co |
| NOTICE: drop cascades to append only table countrylanguage_ao |
| NOTICE: drop cascades to append only table country_ao |
| NOTICE: drop cascades to append only table city_ao |
| NOTICE: drop cascades to table countrylanguage |
| NOTICE: drop cascades to table country |
| NOTICE: drop cascades to table city |
| -- end_ignore |
| RESET optimizer_trace_fallback; |
