From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | jose(at)sferacarta(dot)com (Jose' Soares) |
Cc: | djackson(at)cpsgroup(dot)com, lockhart(at)alumni(dot)caltech(dot)edu, pgsql-hackers(at)hub(dot)org |
Subject: | Re: [HACKERS] SQL92 |
Date: | 1998-10-02 01:58:09 |
Message-ID: | 199810020158.VAA22885@candle.pha.pa.us |
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Lists: | 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(at)candle(dot)pha(dot)pa(dot)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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