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drop table ’·×’»»’µ¡’Íђ¸ì;
ERROR: table "’·×’»»’µ¡’Íђ¸ì" does not exist
create table ’·×’»»’µ¡’Íђ¸ì (’Íђ¸ì text, ’ʬ’Îà’¥³’¡¼’¥É varchar, ’È÷’¹Í1A’¤À’¤è char(16));
create index ’·×’»»’µ¡’Íђ¸ìindex1 on ’·×’»»’µ¡’Íђ¸ì using btree (’Íђ¸ì);
create index ’·×’»»’µ¡’Íђ¸ìindex2 on ’·×’»»’µ¡’Íђ¸ì using hash (’ʬ’Îà’¥³’¡¼’¥É);
insert into ’·×’»»’µ¡’Íђ¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤','’µ¡A01’¾å');
insert into ’·×’»»’µ¡’Íђ¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹','’ʬB10’Ãæ');
insert into ’·×’»»’µ¡’Íђ¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼','’¿ÍZ01’²¼');
vacuum ’·×’»»’µ¡’Íђ¸ì;
select * from ’·×’»»’µ¡’Íђ¸ì;
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
----------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å |
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ |
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ |
(3 rows)
select * from ’·×’»»’µ¡’Íђ¸ì where ’ʬ’Îà’¥³’¡¼’¥É = '’¿ÍZ01’²¼';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
--------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ |
(1 row)
select * from ’·×’»»’µ¡’Íђ¸ì where ’ʬ’Îà’¥³’¡¼’¥É ~* '’¿Íz01’²¼';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
--------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ |
(1 row)
select * from ’·×’»»’µ¡’Íђ¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z01_';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
--------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ |
(1 row)
select * from ’·×’»»’µ¡’Íђ¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z%';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
--------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ |
(1 row)
select * from ’·×’»»’µ¡’Íђ¸ì where ’Íђ¸ì ~ '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
----------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å |
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ |
(2 rows)
select * from ’·×’»»’µ¡’Íђ¸ì where ’Íђ¸ì ~* '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]';
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è
----------------------------+------------+------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å |
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ |
(2 rows)
select *,character_length(’Íђ¸ì) from ’·×’»»’µ¡’Íђ¸ì;
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | character_length
----------------------------+------------+------------+------------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 12
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | 13
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 12
(3 rows)
select *,octet_length(’Íђ¸ì) from ’·×’»»’µ¡’Íђ¸ì;
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | octet_length
----------------------------+------------+------------+--------------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 36
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | 39
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 36
(3 rows)
select *,position('’¥Ç' in ’Íђ¸ì) from ’·×’»»’µ¡’Íђ¸ì;
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | position
----------------------------+------------+------------+----------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 7
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | 0
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 0
(3 rows)
select *,substring(’Íђ¸ì from 10 for 4) from ’·×’»»’µ¡’Íђ¸ì;
’Íђ¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | substring
----------------------------+------------+------------+-----------
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | ’¥×’¥ì’¥¤
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | ’¥£’¥Ã’¥¯’¥¹
’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | ’¥é’¥Þ’¡¼
(3 rows)
drop table ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
ERROR: table "‘¼Æ‘Ë㑻ú‘Êõ‘Óï" does not exist
create table ‘¼Æ‘Ë㑻ú‘Êõ‘Óï(‘Êõ‘Óï text, ‘·Ö‘Àà‘ºÅ varchar, ‘±¸‘×¢1A char(16));
create index ‘¼Æ‘Ë㑻ú‘Êõ‘Óïindex1 on ‘¼Æ‘Ë㑻ú‘Êõ‘Óï using btree(‘Êõ‘Óï);
create index ‘¼Æ‘Ë㑻ú‘Êõ‘Óïindex2 on ‘¼Æ‘Ë㑻ú‘Êõ‘Óï using btree(‘·Ö‘Àà‘ºÅ);
insert into ‘¼Æ‘Ë㑻ú‘Êõ‘Óï values('‘µç‘ÄԑÏԑʾ‘ÆÁ','‘»úA01‘ÉÏ');
insert into ‘¼Æ‘Ë㑻ú‘Êõ‘Óï values('‘µç‘Äԑͼ‘ÐÎ','‘·ÖB01‘ÖÐ');
insert into ‘¼Æ‘Ë㑻ú‘Êõ‘Óï values('‘µç‘Äԑ³Ì‘Ðò‘Ô±','‘ÈËZ01‘ÏÂ');
vacuum ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ |
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ |
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï |
(3 rows)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ = '‘ÈËZ01‘ÏÂ';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï |
(1 row)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ ~* '‘ÈËz01‘ÏÂ';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï |
(1 row)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z01_';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï |
(1 row)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z%';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï |
(1 row)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘Êõ‘Óï ~ '‘µç‘ÄÔ[‘Ïԑͼ]';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ |
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ |
(2 rows)
select * from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï where ‘Êõ‘Óï ~* '‘µç‘ÄÔ[‘Ïԑͼ]';
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a
------------+---------+--------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ |
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ |
(2 rows)
select *,character_length(‘Êõ‘Óï) from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | character_length
------------+---------+--------+------------------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 5
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | 4
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 5
(3 rows)
select *,octet_length(‘Êõ‘Óï) from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | octet_length
------------+---------+--------+--------------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 15
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | 12
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 15
(3 rows)
select *,position('‘ÏÔ' in ‘Êõ‘Óï) from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | position
------------+---------+--------+----------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 3
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | 0
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 0
(3 rows)
select *,substring(‘Êõ‘Óï from 3 for 4) from ‘¼Æ‘Ë㑻ú‘Êõ‘Óï;
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | substring
------------+---------+--------+-----------
‘µç‘ÄԑÏԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | ‘Ïԑʾ‘ÆÁ
‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | ‘ͼ‘ÐÎ
‘µç‘Äԑ³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | ‘³Ì‘Ðò‘Ô±
(3 rows)
drop table “ͪ“ß©“Ѧ“¿ë“¾î;
ERROR: table "“ͪ“ß©“Ѧ“¿ë“¾î" does not exist
create table “ͪ“ß©“Ѧ“¿ë“¾î (“¿ë“¾î text, “Ý“׾“Äړµå varchar, “ºñ“°í1A“¶ó“±¸ char(16));
create index “ͪ“ß©“Ѧ“¿ë“¾îindex1 on “ͪ“ß©“Ѧ“¿ë“¾î using btree (“¿ë“¾î);
create index “ͪ“ß©“Ѧ“¿ë“¾îindex2 on “ͪ“ß©“Ѧ“¿ë“¾î using hash (“Ý“׾“Äړµå);
insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ', '“ѦA01“ß¾');
insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“Å͓±×“·¡“Çȓ½º', '“ÝÂB10“ñé');
insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó', '“ìÑZ01“ù»');
vacuum “ͪ“ß©“Ѧ“¿ë“¾î;
select * from “ͪ“ß©“Ѧ“¿ë“¾î;
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ |
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé |
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» |
(3 rows)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“Äړµå = '“ìÑZ01“ù»';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» |
(1 row)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“Äړµå ~* '“ìÑz01“ù»';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» |
(1 row)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“Äړµå like '_Z01_';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» |
(1 row)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“Äړµå like '_Z%';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» |
(1 row)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~ '“Äēǻ“ÅÍ[“µð“±×]';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ |
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé |
(2 rows)
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~* '“Äēǻ“ÅÍ[“µð“±×]';
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸
------------------+----------+------------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ |
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé |
(2 rows)
select *,character_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î;
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸ | character_length
------------------+----------+------------+------------------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 8
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé | | 7
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 8
(3 rows)
select *,octet_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î;
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸ | octet_length
------------------+----------+------------+--------------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 24
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé | | 21
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 24
(3 rows)
select *,position('“µð' in “¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î;
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸ | position
------------------+----------+------------+----------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 4
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé | | 0
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 0
(3 rows)
select *,substring(“¿ë“¾î from 3 for 4) from “ͪ“ß©“Ѧ“¿ë“¾î;
“¿ë“¾î | “Ý“׾“Äړµå | “ºñ“°í1a“¶ó“±¸ | substring
------------------+----------+------------+-----------
“Äēǻ“Å͓µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | “Å͓µð“½º“ÇÃ
“Äēǻ“Å͓±×“·¡“Çȓ½º | “ÝÂB10“ñé | | “Å͓±×“·¡“ÇÈ
“Äēǻ“Å͓ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | “Å͓ÇÁ“·Î“±×
(3 rows)
drop table test;
ERROR: table "test" does not exist
create table test (t text);
insert into test values('ENGLISH');
insert into test values('FRANÇAIS');
insert into test values('ESPAÑOL');
insert into test values('ÍSLENSKA');
insert into test values('ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA');
vacuum test;
select * from test;
t
-----------------------------------
ENGLISH
FRANÇAIS
ESPAÑOL
ÍSLENSKA
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA
(5 rows)
select * from test where t = 'ESPAÑOL';
t
---------
ESPAÑOL
(1 row)
select * from test where t ~* 'espaÑol';
t
-----------------------------------
ESPAÑOL
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA
(2 rows)
select *,character_length(t) from test;
t | character_length
-----------------------------------+------------------
ENGLISH | 7
FRANÇAIS | 8
ESPAÑOL | 7
ÍSLENSKA | 8
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA | 33
(5 rows)
select *,octet_length(t) from test;
t | octet_length
-----------------------------------+--------------
ENGLISH | 7
FRANÇAIS | 9
ESPAÑOL | 8
ÍSLENSKA | 9
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA | 36
(5 rows)
select *,position('L' in t) from test;
t | position
-----------------------------------+----------
ENGLISH | 4
FRANÇAIS | 0
ESPAÑOL | 7
ÍSLENSKA | 3
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA | 4
(5 rows)
select *,substring(t from 3 for 4) from test;
t | substring
-----------------------------------+-----------
ENGLISH | GLIS
FRANÇAIS | ANÇA
ESPAÑOL | PAÑO
ÍSLENSKA | LENS
ENGLISH FRANÇAIS ESPAÑOL ÍSLENSKA | GLIS
(5 rows)