X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org
Received: from localhost (unknown [200.46.204.144])
	by svr1.postgresql.org (Postfix) with ESMTP id 6598D53B19
	for <pgsql-performance-postgresql.org@localhost.postgresql.org>;
	Sun,  8 May 2005 21:58:29 -0300 (ADT)
Received: from svr1.postgresql.org ([200.46.204.71])
	by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024)
	with ESMTP id 92815-02
	for <pgsql-performance-postgresql.org@localhost.postgresql.org>;
	Mon,  9 May 2005 00:58:20 +0000 (GMT)
Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130])
	by svr1.postgresql.org (Postfix) with ESMTP id 584BE533AA
	for <pgsql-performance@postgresql.org>;
	Sun,  8 May 2005 21:58:19 -0300 (ADT)
Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1])
	by sss.pgh.pa.us (8.13.1/8.13.1) with ESMTP id j490wMnk015031;
	Sun, 8 May 2005 20:58:22 -0400 (EDT)
To: Russell Smith <mr-russ@pws.com.au>
Cc: Dan Harris <fbsd@drivefaster.net>,
	pgsql-performance@postgresql.org
Subject: Re: Query tuning help 
In-reply-to: <200505091051.14689.mr-russ@pws.com.au> 
References: <924ac6c029f5453c442eacdda06b132c@drivefaster.net>
	<200505091051.14689.mr-russ@pws.com.au>
Comments: In-reply-to Russell Smith <mr-russ@pws.com.au>
	message dated "Mon, 09 May 2005 10:51:14 +1000"
Date: Sun, 08 May 2005 20:58:22 -0400
Message-ID: <15030.1115600302@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Virus-Scanned: by amavisd-new at hub.org
X-Spam-Status: No, hits=0.006 tagged_above=0 required=5 tests=AWL
X-Spam-Level: 
X-Archive-Number: 200505/90
X-Sequence-Number: 12254

Russell Smith <mr-russ@pws.com.au> writes:
> On Mon, 9 May 2005 09:20 am, Dan Harris wrote:
>> and (  recordtext like '%RED%' or recordtext like '%CORVETTE%'  )  
>> 
> You cannot use an index for %CORVETTE%, or %RED%.

Not a btree index anyway.  Dan might have some success here with a
full-text-indexing package (eg, contrib/tsearch2)

			regards, tom lane