RE: [HACKERS] SQL92
От | Jackson, DeJuan |
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Тема | RE: [HACKERS] SQL92 |
Дата | |
Msg-id | F10BB1FAF801D111829B0060971D839F447E09@cpsmail обсуждение исходный текст |
Ответы |
Re: [HACKERS] SQL92
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Список | pgsql-hackers |
> > The SQL92 LIKE: > > > > character-string-expression [NOT] LIKE pattern [ESCAPE > > 'escape-char'] > > > > allows only the special characters % and _ > > > > You need The SQL3 SIMILAR > > > > character-string-expression [NOT] SIMILAR TO pattern [ESCAPE > > 'escape-char'] > > > > in this case pattern can involve additional special characters, not > just > > % and _ as in LIKE, but every regular expression or > "[character_set]" > > like you said. (Refer to "A Guide to SQL Standard 4th edition > > Date-Rarwen, page 505). > > > > Jose' > > > > > > TODO item changed to: > > * add SIMILAR to allow character classes, 'pg_[a-c]%' So are we going to add the character class support to LIKE or SIMILAR or both? Just looking for clarification. Or are we going to use the regex code for both? -DEJ
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