Re: [HACKERS] SQL92
От | Bruce Momjian |
---|---|
Тема | Re: [HACKERS] SQL92 |
Дата | |
Msg-id | 199810020158.VAA22885@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [HACKERS] SQL92 ("Jose' Soares" <jose@sferacarta.com>) |
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]%' -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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