Re: Inside the Regex Engine - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Inside the Regex Engine
Date
Msg-id 26761.1070424342@sss.pgh.pa.us
Whole thread Raw
In response to Inside the Regex Engine  (david@fetter.org (David Fetter))
Responses Re: Inside the Regex Engine  (Andrew Dunstan <andrew@dunslane.net>)
List pgsql-hackers
david@fetter.org (David Fetter) writes:
> While PL/Perl is great, it's not available everywhere, and I'd like to
> be able to grab atoms from a regex match in, say, a SELECT.  Is there
> some way to get access to them?

There's a three-parameter variant of substring() that allows extraction
of a portion of a regex match --- unfortunately it uses SQL99's
brain-dead notion of regex, which will not satisfy any Perl weenie :-(

I think it'd be worth our while to define some comparable functionality
that depends only on the POSIX regex engine ...
        regards, tom lane


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