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List:       pgsql-hackers
Subject:    Re: [HACKERS] regexp_match() returning text
From:       Andrew Gierth <andrew () tao11 ! riddles ! org ! uk>
Date:       2016-05-30 18:01:39
Message-ID: 871t4j5tg4.fsf () news-spur ! riddles ! org ! uk
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>>>>> "Emre" == Emre Hasegeli <emre@hasegeli.com> writes:

 Emre> Attached patch adds regexp_match() function which is a simple
 Emre> variant of regexp_matches() that doesn't return a set.

We already have a function that takes a string and a regexp and returns
a single text result: substring().

Regexp flags other than 'g' can also be embedded in the regexp:

postgres=# select substring('foo bar' from '(?i)BA+');
 substring 
-----------
 ba

Returning an array containing the values of all capture groups might be
more useful (substring returns the value of the first capture group if
any, otherwise the matched string).

-- 
Andrew (irc:RhodiumToad)


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