From: Jeff Boes <jboes@nexcerpt.com>
To: pgsql-sql@postgresql.org
Subject: Re: "reverse()" on strings
Date: Mon, 26 Aug 2002 16:56:46 -0400
Message-ID: <ake4lb$20ed$1@news.hub.org> (raw)
References: <no.Yo.N.nN.0208261600250.2291-100000@business.com>
On Mon, 26 Aug 2002 16:13:44 -0400, h012 wrote:
> CREATE INDEX extension_idx ON file (reverse(name));
> -- but I didn't find a function called "reverse"
>
> CREATE INDEX extension_idx ON file (regex_match( '.*(\.[^\.]*)$' );
> -- but I didn't find a function called "regex_match" which would return
> string matched in brackets ()
>
You probably want to do a
$ createlang plperl
and then something like this:
CREATE FUNCTION fn_strrev(text) returns text as '
return reverse($_[0])
' language 'plperl' with (iscachable);
The same approach can be used to provide a regex match with Perl syntax,
but I don't have an example of that coded up and at hand.
--
Jeff Boes vox 269.226.9550 ext 24
Database Engineer fax 269.349.9076
Nexcerpt, Inc. http://www.nexcerpt.com
...Nexcerpt... Extend your Expertise
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To: pgsql-sql@postgresql.org
Cc: jboes@nexcerpt.com
Subject: Re: "reverse()" on strings
In-Reply-To: <ake4lb$20ed$1@news.hub.org>
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