examples/sql.py

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# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
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# distributed under the License is distributed on an "AS IS" BASIS,
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# limitations under the License.

from decimal import Decimal

from pyignite import Client


COUNTRY_TABLE_NAME = 'Country'
CITY_TABLE_NAME = 'City'
LANGUAGE_TABLE_NAME = 'CountryLanguage'

COUNTRY_CREATE_TABLE_QUERY = '''CREATE TABLE Country (
    Code CHAR(3) PRIMARY KEY,
    Name CHAR(52),
    Continent CHAR(50),
    Region CHAR(26),
    SurfaceArea DECIMAL(10,2),
    IndepYear SMALLINT(6),
    Population INT(11),
    LifeExpectancy DECIMAL(3,1),
    GNP DECIMAL(10,2),
    GNPOld DECIMAL(10,2),
    LocalName CHAR(45),
    GovernmentForm CHAR(45),
    HeadOfState CHAR(60),
    Capital INT(11),
    Code2 CHAR(2)
)'''

COUNTRY_INSERT_QUERY = '''INSERT INTO Country(
    Code, Name, Continent, Region,
    SurfaceArea, IndepYear, Population,
    LifeExpectancy, GNP, GNPOld,
    LocalName, GovernmentForm, HeadOfState,
    Capital, Code2
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'''

CITY_CREATE_TABLE_QUERY = '''CREATE TABLE City (
    ID INT(11),
    Name CHAR(35),
    CountryCode CHAR(3),
    District CHAR(20),
    Population INT(11),
    PRIMARY KEY (ID, CountryCode)
) WITH "affinityKey=CountryCode"'''

CITY_CREATE_INDEX = '''
CREATE INDEX idx_country_code ON city (CountryCode)'''

CITY_INSERT_QUERY = '''INSERT INTO City(
    ID, Name, CountryCode, District, Population
) VALUES (?, ?, ?, ?, ?)'''

LANGUAGE_CREATE_TABLE_QUERY = '''CREATE TABLE CountryLanguage (
    CountryCode CHAR(3),
    Language CHAR(30),
    IsOfficial BOOLEAN,
    Percentage DECIMAL(4,1),
    PRIMARY KEY (CountryCode, Language)
) WITH "affinityKey=CountryCode"'''

LANGUAGE_CREATE_INDEX = '''
CREATE INDEX idx_lang_country_code ON CountryLanguage (CountryCode)'''

LANGUAGE_INSERT_QUERY = '''INSERT INTO CountryLanguage(
    CountryCode, Language, IsOfficial, Percentage
) VALUES (?, ?, ?, ?)'''

DROP_TABLE_QUERY = '''DROP TABLE {} IF EXISTS'''

COUNTRY_DATA = [
    [
        'USA', 'United States', 'North America', 'North America',
        Decimal('9363520.00'), 1776, 278357000,
        Decimal('77.1'), Decimal('8510700.00'), Decimal('8110900.00'),
        'United States', 'Federal Republic', 'George W. Bush',
        3813, 'US',
    ],
    [
        'IND', 'India', 'Asia', 'Southern and Central Asia',
        Decimal('3287263.00'), 1947, 1013662000,
        Decimal('62.5'), Decimal('447114.00'), Decimal('430572.00'),
        'Bharat/India', 'Federal Republic', 'Kocheril Raman Narayanan',
        1109, 'IN',
    ],
    [
        'CHN', 'China', 'Asia', 'Eastern Asia',
        Decimal('9572900.00'), -1523, 1277558000,
        Decimal('71.4'), Decimal('982268.00'), Decimal('917719.00'),
        'Zhongquo', 'PeoplesRepublic', 'Jiang Zemin',
        1891, 'CN',
    ],
]

CITY_DATA = [
    [3793, 'New York', 'USA', 'New York', 8008278],
    [3794, 'Los Angeles', 'USA', 'California', 3694820],
    [3795, 'Chicago', 'USA', 'Illinois', 2896016],
    [3796, 'Houston', 'USA', 'Texas', 1953631],
    [3797, 'Philadelphia', 'USA', 'Pennsylvania', 1517550],
    [3798, 'Phoenix', 'USA', 'Arizona', 1321045],
    [3799, 'San Diego', 'USA', 'California', 1223400],
    [3800, 'Dallas', 'USA', 'Texas', 1188580],
    [3801, 'San Antonio', 'USA', 'Texas', 1144646],
    [3802, 'Detroit', 'USA', 'Michigan', 951270],
    [3803, 'San Jose', 'USA', 'California', 894943],
    [3804, 'Indianapolis', 'USA', 'Indiana', 791926],
    [3805, 'San Francisco', 'USA', 'California', 776733],
    [1024, 'Mumbai (Bombay)', 'IND', 'Maharashtra', 10500000],
    [1025, 'Delhi', 'IND', 'Delhi', 7206704],
    [1026, 'Calcutta [Kolkata]', 'IND', 'West Bengali', 4399819],
    [1027, 'Chennai (Madras)', 'IND', 'Tamil Nadu', 3841396],
    [1028, 'Hyderabad', 'IND', 'Andhra Pradesh', 2964638],
    [1029, 'Ahmedabad', 'IND', 'Gujarat', 2876710],
    [1030, 'Bangalore', 'IND', 'Karnataka', 2660088],
    [1031, 'Kanpur', 'IND', 'Uttar Pradesh', 1874409],
    [1032, 'Nagpur', 'IND', 'Maharashtra', 1624752],
    [1033, 'Lucknow', 'IND', 'Uttar Pradesh', 1619115],
    [1034, 'Pune', 'IND', 'Maharashtra', 1566651],
    [1035, 'Surat', 'IND', 'Gujarat', 1498817],
    [1036, 'Jaipur', 'IND', 'Rajasthan', 1458483],
    [1890, 'Shanghai', 'CHN', 'Shanghai', 9696300],
    [1891, 'Peking', 'CHN', 'Peking', 7472000],
    [1892, 'Chongqing', 'CHN', 'Chongqing', 6351600],
    [1893, 'Tianjin', 'CHN', 'Tianjin', 5286800],
    [1894, 'Wuhan', 'CHN', 'Hubei', 4344600],
    [1895, 'Harbin', 'CHN', 'Heilongjiang', 4289800],
    [1896, 'Shenyang', 'CHN', 'Liaoning', 4265200],
    [1897, 'Kanton [Guangzhou]', 'CHN', 'Guangdong', 4256300],
    [1898, 'Chengdu', 'CHN', 'Sichuan', 3361500],
    [1899, 'Nanking [Nanjing]', 'CHN', 'Jiangsu', 2870300],
    [1900, 'Changchun', 'CHN', 'Jilin', 2812000],
    [1901, 'Xi´an', 'CHN', 'Shaanxi', 2761400],
    [1902, 'Dalian', 'CHN', 'Liaoning', 2697000],
    [1903, 'Qingdao', 'CHN', 'Shandong', 2596000],
    [1904, 'Jinan', 'CHN', 'Shandong', 2278100],
    [1905, 'Hangzhou', 'CHN', 'Zhejiang', 2190500],
    [1906, 'Zhengzhou', 'CHN', 'Henan', 2107200],
]

LANGUAGE_DATA = [
    ['USA', 'Chinese', False, Decimal('0.6')],
    ['USA', 'English', True, Decimal('86.2')],
    ['USA', 'French', False, Decimal('0.7')],
    ['USA', 'German', False, Decimal('0.7')],
    ['USA', 'Italian', False, Decimal('0.6')],
    ['USA', 'Japanese', False, Decimal('0.2')],
    ['USA', 'Korean', False, Decimal('0.3')],
    ['USA', 'Polish', False, Decimal('0.3')],
    ['USA', 'Portuguese', False, Decimal('0.2')],
    ['USA', 'Spanish', False, Decimal('7.5')],
    ['USA', 'Tagalog', False, Decimal('0.4')],
    ['USA', 'Vietnamese', False, Decimal('0.2')],
    ['IND', 'Asami', False, Decimal('1.5')],
    ['IND', 'Bengali', False, Decimal('8.2')],
    ['IND', 'Gujarati', False, Decimal('4.8')],
    ['IND', 'Hindi', True, Decimal('39.9')],
    ['IND', 'Kannada', False, Decimal('3.9')],
    ['IND', 'Malajalam', False, Decimal('3.6')],
    ['IND', 'Marathi', False, Decimal('7.4')],
    ['IND', 'Orija', False, Decimal('3.3')],
    ['IND', 'Punjabi', False, Decimal('2.8')],
    ['IND', 'Tamil', False, Decimal('6.3')],
    ['IND', 'Telugu', False, Decimal('7.8')],
    ['IND', 'Urdu', False, Decimal('5.1')],
    ['CHN', 'Chinese', True, Decimal('92.0')],
    ['CHN', 'Dong', False, Decimal('0.2')],
    ['CHN', 'Hui', False, Decimal('0.8')],
    ['CHN', 'Mantšu', False, Decimal('0.9')],
    ['CHN', 'Miao', False, Decimal('0.7')],
    ['CHN', 'Mongolian', False, Decimal('0.4')],
    ['CHN', 'Puyi', False, Decimal('0.2')],
    ['CHN', 'Tibetan', False, Decimal('0.4')],
    ['CHN', 'Tujia', False, Decimal('0.5')],
    ['CHN', 'Uighur', False, Decimal('0.6')],
    ['CHN', 'Yi', False, Decimal('0.6')],
    ['CHN', 'Zhuang', False, Decimal('1.4')],
]


# establish connection
client = Client()
client.connect('127.0.0.1', 10800)

# create tables
for query in [
    COUNTRY_CREATE_TABLE_QUERY,
    CITY_CREATE_TABLE_QUERY,
    LANGUAGE_CREATE_TABLE_QUERY,
]:
    client.sql(query)

# create indices
for query in [CITY_CREATE_INDEX, LANGUAGE_CREATE_INDEX]:
    client.sql(query)

# load data
for row in COUNTRY_DATA:
    client.sql(COUNTRY_INSERT_QUERY, query_args=row)

for row in CITY_DATA:
    client.sql(CITY_INSERT_QUERY, query_args=row)

for row in LANGUAGE_DATA:
    client.sql(LANGUAGE_INSERT_QUERY, query_args=row)

# 10 most populated cities (with pagination)
MOST_POPULATED_QUERY = '''
SELECT name, population FROM City ORDER BY population DESC LIMIT 10'''

result = client.sql(MOST_POPULATED_QUERY)
print('Most 10 populated cities:')
for row in result:
    print(row)
# Most 10 populated cities:
# ['Mumbai (Bombay)', 10500000]
# ['Shanghai', 9696300]
# ['New York', 8008278]
# ['Peking', 7472000]
# ['Delhi', 7206704]
# ['Chongqing', 6351600]
# ['Tianjin', 5286800]
# ['Calcutta [Kolkata]', 4399819]
# ['Wuhan', 4344600]
# ['Harbin', 4289800]

# 10 most populated cities in 3 countries (with pagination and header row)
MOST_POPULATED_IN_3_COUNTRIES_QUERY = '''
SELECT country.name as country_name, city.name as city_name, MAX(city.population) AS max_pop FROM country
    JOIN city ON city.countrycode = country.code
    WHERE country.code IN ('USA','IND','CHN')
    GROUP BY country.name, city.name ORDER BY max_pop DESC LIMIT 10
'''

result = client.sql(
    MOST_POPULATED_IN_3_COUNTRIES_QUERY,
    include_field_names=True,
)
print('Most 10 populated cities in USA, India and China:')
print(next(result))
print('----------------------------------------')
for row in result:
    print(row)
# Most 10 populated cities in USA, India and China:
# ['COUNTRY_NAME', 'CITY_NAME', 'MAX_POP']
# ----------------------------------------
# ['India', 'Mumbai (Bombay)', 10500000]
# ['China', 'Shanghai', 9696300]
# ['United States', 'New York', 8008278]
# ['China', 'Peking', 7472000]
# ['India', 'Delhi', 7206704]
# ['China', 'Chongqing', 6351600]
# ['China', 'Tianjin', 5286800]
# ['India', 'Calcutta [Kolkata]', 4399819]
# ['China', 'Wuhan', 4344600]
# ['China', 'Harbin', 4289800]

# show city info
CITY_INFO_QUERY = '''SELECT * FROM City WHERE id = ?'''

result = client.sql(
    CITY_INFO_QUERY,
    query_args=[3802],
    include_field_names=True,
)
field_names = next(result)
field_data = list(*result)

print('City info:')
for field_name, field_value in zip(field_names*len(field_data), field_data):
    print('{}: {}'.format(field_name, field_value))
# City info:
# ID: 3802
# NAME: Detroit
# COUNTRYCODE: USA
# DISTRICT: Michigan
# POPULATION: 951270

# clean up
for table_name in [
    CITY_TABLE_NAME,
    LANGUAGE_TABLE_NAME,
    COUNTRY_TABLE_NAME,
]:
    result = client.sql(DROP_TABLE_QUERY.format(table_name))