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@ -1,13 +1,13 @@ |
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drop table ’·×’»»’µ¡’ÍÑ’¸ì |
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drop table ’·×’»»’µ¡’ÍÑ’¸ì; |
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ERROR: Relation '’·×’»»’µ¡’ÍÑ’¸ì' does not exist |
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create table ’·×’»»’µ¡’ÍÑ’¸ì (’ÍÑ’¸ì text, ’ʬ’Îà’¥³’¡¼’¥É varchar, ’È÷’¹Í1A’¤À’¤è char(16)) |
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create index ’·×’»»’µ¡’ÍÑ’¸ìindex1 on ’·×’»»’µ¡’ÍÑ’¸ì using btree (’ÍÑ’¸ì) |
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create index ’·×’»»’µ¡’ÍÑ’¸ìindex2 on ’·×’»»’µ¡’ÍÑ’¸ì using hash (’ʬ’Îà’¥³’¡¼’¥É) |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤','’µ¡A01’¾å') |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹','’ʬB10’Ãæ') |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼','’¿ÍZ01’²¼') |
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vacuum ’·×’»»’µ¡’ÍÑ’¸ì |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì |
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create table ’·×’»»’µ¡’ÍÑ’¸ì (’ÍÑ’¸ì text, ’ʬ’Îà’¥³’¡¼’¥É varchar, ’È÷’¹Í1A’¤À’¤è char(16)); |
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create index ’·×’»»’µ¡’ÍÑ’¸ìindex1 on ’·×’»»’µ¡’ÍÑ’¸ì using btree (’ÍÑ’¸ì); |
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create index ’·×’»»’µ¡’ÍÑ’¸ìindex2 on ’·×’»»’µ¡’ÍÑ’¸ì using hash (’ʬ’Îà’¥³’¡¼’¥É); |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤','’µ¡A01’¾å'); |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹','’ʬB10’Ãæ'); |
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insert into ’·×’»»’µ¡’ÍÑ’¸ì values('’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼','’¿ÍZ01’²¼'); |
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vacuum ’·×’»»’µ¡’ÍÑ’¸ì; |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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-----------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | |
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@ -15,53 +15,53 @@ select * from |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | |
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(3 rows) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É = '’¿ÍZ01’²¼' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É = '’¿ÍZ01’²¼'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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--------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | |
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(1 row) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É ~* '’¿Íz01’²¼' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É ~* '’¿Íz01’²¼'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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--------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | |
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(1 row) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z01_' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z01_'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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--------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | |
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(1 row) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z%' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ʬ’Îà’¥³’¡¼’¥É like '_Z%'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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--------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | |
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(1 row) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ÍÑ’¸ì ~ '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ÍÑ’¸ì ~ '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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-----------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | |
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(2 rows) |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ÍÑ’¸ì ~* '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]' |
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select * from ’·×’»»’µ¡’ÍÑ’¸ì where ’ÍÑ’¸ì ~* '’¥³’¥ó’¥Ô’¥å’¡¼’¥¿[’¥Ç’¥°]'; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è |
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-----------------------------------------+-----------------+---------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | |
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(2 rows) |
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select *,character_length(’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | length |
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-----------------------------------------+-----------------+----------------+-------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 12 |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | 13 |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 12 |
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select *,character_length(’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | char_length |
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-----------------------------------------+-----------------+----------------+------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 12 |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥°’¥é’¥Õ’¥£’¥Ã’¥¯’¥¹ | ’ʬB10’Ãæ | | 13 |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 12 |
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(3 rows) |
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select *,octet_length(’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì |
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select *,octet_length(’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | octet_length |
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-----------------------------------------+-----------------+----------------+-------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 36 |
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@ -69,7 +69,7 @@ select *,octet_length( |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 36 |
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(3 rows) |
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select *,position('’¥Ç' in ’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì |
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select *,position('’¥Ç' in ’ÍÑ’¸ì) from ’·×’»»’µ¡’ÍÑ’¸ì; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | strpos |
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-----------------------------------------+-----------------+----------------+-------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | 7 |
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@ -77,7 +77,7 @@ select *,position(' |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | 0 |
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(3 rows) |
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select *,substring(’ÍÑ’¸ì from 10 for 4) from ’·×’»»’µ¡’ÍÑ’¸ì |
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select *,substring(’ÍÑ’¸ì from 10 for 4) from ’·×’»»’µ¡’ÍÑ’¸ì; |
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’ÍÑ’¸ì | ’ʬ’Îà’¥³’¡¼’¥É | ’È÷’¹Í1a’¤À’¤è | substr |
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-----------------------------------------+-----------------+----------------+-------------- |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥Ç’¥£’¥¹’¥×’¥ì’¥¤ | ’µ¡A01’¾å | | ’¥×’¥ì’¥¤ |
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@ -85,16 +85,16 @@ select *,substring( |
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’¥³’¥ó’¥Ô’¥å’¡¼’¥¿’¥×’¥í’¥°’¥é’¥Þ’¡¼ | ’¿ÍZ01’²¼ | | ’¥é’¥Þ’¡¼ |
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(3 rows) |
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drop table ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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drop table ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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ERROR: Relation '‘¼Æ‘Ëã‘»ú‘Êõ‘Óï' does not exist |
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create table ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï(‘Êõ‘Óï text, ‘·Ö‘Àà‘ºÅ varchar, ‘±¸‘×¢1A char(16)) |
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create index ‘¼Æ‘Ëã‘»ú‘Êõ‘Óïindex1 on ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï using btree(‘Êõ‘Óï) |
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create index ‘¼Æ‘Ëã‘»ú‘Êõ‘Óïindex2 on ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï using btree(‘·Ö‘Àà‘ºÅ) |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ','‘»úA01‘ÉÏ') |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘Äԑͼ‘ÐÎ','‘·ÖB01‘ÖÐ') |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘ÄÔ‘³Ì‘Ðò‘Ô±','‘ÈËZ01‘ÏÂ') |
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vacuum ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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create table ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï(‘Êõ‘Óï text, ‘·Ö‘Àà‘ºÅ varchar, ‘±¸‘×¢1A char(16)); |
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create index ‘¼Æ‘Ëã‘»ú‘Êõ‘Óïindex1 on ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï using btree(‘Êõ‘Óï); |
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create index ‘¼Æ‘Ëã‘»ú‘Êõ‘Óïindex2 on ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï using btree(‘·Ö‘Àà‘ºÅ); |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ','‘»úA01‘ÉÏ'); |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘Äԑͼ‘ÐÎ','‘·ÖB01‘ÖÐ'); |
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insert into ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï values('‘µç‘ÄÔ‘³Ì‘Ðò‘Ô±','‘ÈËZ01‘ÏÂ'); |
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vacuum ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | |
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@ -102,53 +102,53 @@ select * from |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | |
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(3 rows) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ = '‘ÈËZ01‘ÏÂ' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ = '‘ÈËZ01‘ÏÂ'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | |
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(1 row) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ ~* '‘ÈËz01‘ÏÂ' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ ~* '‘ÈËz01‘ÏÂ'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | |
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(1 row) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z01_' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z01_'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | |
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(1 row) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z%' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘·Ö‘Àà‘ºÅ like '_Z%'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | |
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(1 row) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘Êõ‘Óï ~ '‘µç‘ÄÔ[‘Ïԑͼ]' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘Êõ‘Óï ~ '‘µç‘ÄÔ[‘Ïԑͼ]'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | |
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‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | |
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(2 rows) |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘Êõ‘Óï ~* '‘µç‘ÄÔ[‘Ïԑͼ]' |
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select * from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï where ‘Êõ‘Óï ~* '‘µç‘ÄÔ[‘Ïԑͼ]'; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a |
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-----------------+-----------+---------- |
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‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | |
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‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | |
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(2 rows) |
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select *,character_length(‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | length |
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|
-----------------+-----------+----------+-------- |
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|
‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 5 |
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‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | 4 |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 5 |
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select *,character_length(‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | char_length |
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|
-----------------+-----------+----------+------------- |
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|
‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 5 |
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‘µç‘Äԑͼ‘ÐÎ | ‘·ÖB01‘ÖÐ | | 4 |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 5 |
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(3 rows) |
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select *,octet_length(‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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select *,octet_length(‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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|
‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | octet_length |
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|
-----------------+-----------+----------+-------------- |
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|
‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 15 |
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@ -156,7 +156,7 @@ select *,octet_length( |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 15 |
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(3 rows) |
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select *,position('‘ÏÔ' in ‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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select *,position('‘ÏÔ' in ‘Êõ‘Óï) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | strpos |
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-----------------+-----------+----------+-------- |
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‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | 3 |
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@ -164,7 +164,7 @@ select *,position(' |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | 0 |
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(3 rows) |
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select *,substring(‘Êõ‘Óï from 3 for 4) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï |
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select *,substring(‘Êõ‘Óï from 3 for 4) from ‘¼Æ‘Ëã‘»ú‘Êõ‘Óï; |
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‘Êõ‘Óï | ‘·Ö‘Àà‘ºÅ | ‘±¸‘×¢1a | substr |
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-----------------+-----------+----------+----------- |
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‘µç‘ÄÔ‘Ïԑʾ‘ÆÁ | ‘»úA01‘ÉÏ | | ‘Ïԑʾ‘ÆÁ |
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@ -172,16 +172,16 @@ select *,substring( |
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‘µç‘ÄÔ‘³Ì‘Ðò‘Ô± | ‘ÈËZ01‘Ï | | ‘³Ì‘Ðò‘Ô± |
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(3 rows) |
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drop table “ͪ“ß©“Ѧ“¿ë“¾î |
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drop table “ͪ“ß©“Ѧ“¿ë“¾î; |
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ERROR: Relation '“ͪ“ß©“Ѧ“¿ë“¾î' does not exist |
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create table “ͪ“ß©“Ѧ“¿ë“¾î (“¿ë“¾î text, “Ý“׾“ÄÚ“µå varchar, “ºñ“°í1A“¶ó“±¸ char(16)) |
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create index “ͪ“ß©“Ѧ“¿ë“¾îindex1 on “ͪ“ß©“Ѧ“¿ë“¾î using btree (“¿ë“¾î) |
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create index “ͪ“ß©“Ѧ“¿ë“¾îindex2 on “ͪ“ß©“Ѧ“¿ë“¾î using hash (“Ý“׾“ÄÚ“µå) |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ', '“ѦA01“ß¾') |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º', '“ÝÂB10“ñé') |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó', '“ìÑZ01“ù»') |
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vacuum “ͪ“ß©“Ѧ“¿ë“¾î |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î |
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create table “ͪ“ß©“Ѧ“¿ë“¾î (“¿ë“¾î text, “Ý“׾“ÄÚ“µå varchar, “ºñ“°í1A“¶ó“±¸ char(16)); |
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create index “ͪ“ß©“Ѧ“¿ë“¾îindex1 on “ͪ“ß©“Ѧ“¿ë“¾î using btree (“¿ë“¾î); |
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create index “ͪ“ß©“Ѧ“¿ë“¾îindex2 on “ͪ“ß©“Ѧ“¿ë“¾î using hash (“Ý“׾“ÄÚ“µå); |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ', '“ѦA01“ß¾'); |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º', '“ÝÂB10“ñé'); |
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insert into “ͪ“ß©“Ѧ“¿ë“¾î values('“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó', '“ìÑZ01“ù»'); |
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vacuum “ͪ“ß©“Ѧ“¿ë“¾î; |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
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|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | |
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@ -189,53 +189,53 @@ select * from |
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“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | |
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(3 rows) |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå = '“ìÑZ01“ù»' |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå = '“ìÑZ01“ù»'; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
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|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | |
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(1 row) |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå ~* '“ìÑz01“ù»' |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå ~* '“ìÑz01“ù»'; |
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“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
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|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | |
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(1 row) |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå like '_Z01_' |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå like '_Z01_'; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
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|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | |
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(1 row) |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå like '_Z%' |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “Ý“׾“ÄÚ“µå like '_Z%'; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
|
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|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | |
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|
(1 row) |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~ '“Äēǻ“ÅÍ[“µð“±×]' |
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select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~ '“Äēǻ“ÅÍ[“µð“±×]'; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
|
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|
|
--------------------------+--------------+---------------- |
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|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | |
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|
“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º | “ÝÂB10“ñé | |
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|
(2 rows) |
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|
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~* '“Äēǻ“ÅÍ[“µð“±×]' |
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|
select * from “ͪ“ß©“Ѧ“¿ë“¾î where “¿ë“¾î ~* '“Äēǻ“ÅÍ[“µð“±×]'; |
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|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ |
|
|
|
|
--------------------------+--------------+---------------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | |
|
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|
|
“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º | “ÝÂB10“ñé | |
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|
|
(2 rows) |
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|
|
select *,character_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î |
|
|
|
|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ | length |
|
|
|
|
--------------------------+--------------+----------------+-------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 8 |
|
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|
|
“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º | “ÝÂB10“ñé | | 7 |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 8 |
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|
select *,character_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î; |
|
|
|
|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ | char_length |
|
|
|
|
--------------------------+--------------+----------------+------------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 8 |
|
|
|
|
“Äēǻ“ÅÍ“±×“·¡“ÇÈ“½º | “ÝÂB10“ñé | | 7 |
|
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|
|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 8 |
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|
(3 rows) |
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|
select *,octet_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î |
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|
select *,octet_length(“¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î; |
|
|
|
|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ | octet_length |
|
|
|
|
--------------------------+--------------+----------------+-------------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 24 |
|
|
|
|
@ -243,7 +243,7 @@ select *,octet_length( |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 24 |
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|
|
(3 rows) |
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|
select *,position('“µð' in “¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î |
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|
select *,position('“µð' in “¿ë“¾î) from “ͪ“ß©“Ѧ“¿ë“¾î; |
|
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|
|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ | strpos |
|
|
|
|
--------------------------+--------------+----------------+-------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | 4 |
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|
|
@ -251,7 +251,7 @@ select *,position(' |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | 0 |
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|
(3 rows) |
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|
select *,substring(“¿ë“¾î from 3 for 4) from “ͪ“ß©“Ѧ“¿ë“¾î |
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|
select *,substring(“¿ë“¾î from 3 for 4) from “ͪ“ß©“Ѧ“¿ë“¾î; |
|
|
|
|
“¿ë“¾î | “Ý“׾“ÄÚ“µå | “ºñ“°í1a“¶ó“±¸ | substr |
|
|
|
|
--------------------------+--------------+----------------+-------------- |
|
|
|
|
“Äēǻ“ÅÍ“µð“½º“ÇÓ·¹“ÀÌ | “ѦA01“ß¾ | | “ÅÍ“µð“½º“Çà |
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|
|
@ -259,16 +259,16 @@ select *,substring( |
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|
“Äēǻ“ÅÍ“ÇÁ“·Î“±×“·¡“¸Ó | “ìÑZ01“ù» | | “ÅÍ“ÇÁ“·Î“±× |
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|
(3 rows) |
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|
drop table test |
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|
drop table test; |
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|
ERROR: Relation 'test' does not exist |
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|
create table test (t text) |
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|
insert into test values('ENGLISH') |
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|
insert into test values('FRAN<EFBFBD>ÇAIS') |
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|
insert into test values('ESPA<EFBFBD>ÑOL') |
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|
insert into test values('<EFBFBD>ÍSLENSKA') |
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|
|
insert into test values('ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA') |
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|
vacuum test |
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|
select * from test |
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|
create table test (t text); |
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|
insert into test values('ENGLISH'); |
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|
insert into test values('FRAN<EFBFBD>ÇAIS'); |
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|
|
insert into test values('ESPA<EFBFBD>ÑOL'); |
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|
|
insert into test values('<EFBFBD>ÍSLENSKA'); |
|
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|
|
insert into test values('ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA'); |
|
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|
|
vacuum test; |
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|
select * from test; |
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|
t |
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|
-------------------------------------- |
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|
|
ENGLISH |
|
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|
@ -278,30 +278,30 @@ select * from test |
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|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA |
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|
|
(5 rows) |
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|
select * from test where t = 'ESPA<EFBFBD>ÑOL' |
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|
select * from test where t = 'ESPA<EFBFBD>ÑOL'; |
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|
t |
|
|
|
|
---------- |
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|
|
ESPA<EFBFBD>ÑOL |
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|
(1 row) |
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|
select * from test where t ~* 'espa<EFBFBD>Ñol' |
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|
select * from test where t ~* 'espa<EFBFBD>Ñol'; |
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|
|
t |
|
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|
|
-------------------------------------- |
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|
|
|
ESPA<EFBFBD>ÑOL |
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|
|
|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA |
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|
|
(2 rows) |
|
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|
|
select *,character_length(t) from test |
|
|
|
|
t | length |
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|
|
|
--------------------------------------+-------- |
|
|
|
|
ENGLISH | 7 |
|
|
|
|
FRAN<EFBFBD>ÇAIS | 8 |
|
|
|
|
ESPA<EFBFBD>ÑOL | 7 |
|
|
|
|
<EFBFBD>ÍSLENSKA | 8 |
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|
|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA | 33 |
|
|
|
|
select *,character_length(t) from test; |
|
|
|
|
t | char_length |
|
|
|
|
--------------------------------------+------------- |
|
|
|
|
ENGLISH | 7 |
|
|
|
|
FRAN<EFBFBD>ÇAIS | 8 |
|
|
|
|
ESPA<EFBFBD>ÑOL | 7 |
|
|
|
|
<EFBFBD>ÍSLENSKA | 8 |
|
|
|
|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA | 33 |
|
|
|
|
(5 rows) |
|
|
|
|
|
|
|
|
|
select *,octet_length(t) from test |
|
|
|
|
select *,octet_length(t) from test; |
|
|
|
|
t | octet_length |
|
|
|
|
--------------------------------------+-------------- |
|
|
|
|
ENGLISH | 7 |
|
|
|
|
@ -311,7 +311,7 @@ select *,octet_length(t) from test |
|
|
|
|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA | 36 |
|
|
|
|
(5 rows) |
|
|
|
|
|
|
|
|
|
select *,position('L' in t) from test |
|
|
|
|
select *,position('L' in t) from test; |
|
|
|
|
t | strpos |
|
|
|
|
--------------------------------------+-------- |
|
|
|
|
ENGLISH | 4 |
|
|
|
|
@ -321,7 +321,7 @@ select *,position('L' in t) from test |
|
|
|
|
ENGLISH FRAN<EFBFBD>ÇAIS ESPA<EFBFBD>ÑOL <EFBFBD>ÍSLENSKA | 4 |
|
|
|
|
(5 rows) |
|
|
|
|
|
|
|
|
|
select *,substring(t from 3 for 4) from test |
|
|
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select *,substring(t from 3 for 4) from test; |
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t | substr |
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--------------------------------------+-------- |
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ENGLISH | GLIS |
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