QUERY: drop table 燹俑骜砧;
ERROR:  Relation '燹俑骜砧' does not exist
QUERY: create table 燹俑骜砧 (如淦杀 text, 狞瞥婉螭 varchar, 氢蛇 varchar(16));
QUERY: create index 燹俑骜砧index1 on 燹俑骜砧 using btree (如淦杀);
QUERY: create index 燹俑骜砧index2 on 燹俑骜砧 using hash (狞瞥婉螭);
QUERY: insert into 燹俑骜砧 values ('缳妾淦', '绠绠绎世', '啤A01念');
QUERY: insert into 燹俑骜砧 values ('犒葸淦', '芈溷却宇狞瞥', '你B10你');
QUERY: insert into 燹俑骜砧 values ('螫悖淦', '印汤洗枪却宇狞瞥', '仨Z01摩');
QUERY: vacuum 燹俑骜砧;
QUERY: select * from 燹俑骜砧;
如淦杀|狞瞥婉螭        |氢蛇   
------+----------------+-------
缳妾淦|绠绠绎世        |啤A01念
犒葸淦|芈溷却宇狞瞥    |你B10你
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩
(3 rows)

QUERY: select * from 燹俑骜砧 where 氢蛇 = '仨Z01摩';
如淦杀|狞瞥婉螭        |氢蛇   
------+----------------+-------
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩
(1 row)

QUERY: select * from 燹俑骜砧 where 氢蛇 ~* '仨z01摩';
如淦杀|狞瞥婉螭        |氢蛇   
------+----------------+-------
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩
(1 row)

QUERY: select * from 燹俑骜砧 where 氢蛇 like '_Z01_';
如淦杀|狞瞥婉螭        |氢蛇   
------+----------------+-------
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩
(1 row)

QUERY: select * from 燹俑骜砧 where 氢蛇 like '_Z%';
如淦杀|狞瞥婉螭        |氢蛇   
------+----------------+-------
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩
(1 row)

QUERY: select * from 燹俑骜砧 where 狞瞥婉螭 ~ '绠绠绎[凫卮世]';
如淦杀|狞瞥婉螭|氢蛇   
------+--------+-------
缳妾淦|绠绠绎世|啤A01念
(1 row)

QUERY: select * from 燹俑骜砧 where 狞瞥婉螭 ~* '绠绠绎[凫卮世]';
如淦杀|狞瞥婉螭|氢蛇   
------+--------+-------
缳妾淦|绠绠绎世|啤A01念
(1 row)

QUERY: select *, character_length(如淦杀) from 燹俑骜砧;
如淦杀|狞瞥婉螭        |氢蛇   |length
------+----------------+-------+------
缳妾淦|绠绠绎世        |啤A01念|     3
犒葸淦|芈溷却宇狞瞥    |你B10你|     3
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩|     3
(3 rows)

QUERY: select *, octet_length(如淦杀) from 燹俑骜砧;
如淦杀|狞瞥婉螭        |氢蛇   |octet_length
------+----------------+-------+------------
缳妾淦|绠绠绎世        |啤A01念|           6
犒葸淦|芈溷却宇狞瞥    |你B10你|           6
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩|           6
(3 rows)

QUERY: select *, position('却宇' in 狞瞥婉螭) from 燹俑骜砧;
如淦杀|狞瞥婉螭        |氢蛇   |strpos
------+----------------+-------+------
缳妾淦|绠绠绎世        |啤A01念|     0
犒葸淦|芈溷却宇狞瞥    |你B10你|     3
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩|     5
(3 rows)

QUERY: select *, substring(狞瞥婉螭 from 3 for 6 ) from 燹俑骜砧;
如淦杀|狞瞥婉螭        |氢蛇   |substr      
------+----------------+-------+------------
缳妾淦|绠绠绎世        |啤A01念|绎世        
犒葸淦|芈溷却宇狞瞥    |你B10你|却宇狞瞥    
螫悖淦|印汤洗枪却宇狞瞥|仨Z01摩|洗枪却宇狞瞥
(3 rows)

