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Re: [HACKERS] SQL92

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 (view raw or flat)
Thread:
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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