X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id C13669DC80F for ; Wed, 18 Jan 2006 07:15:29 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 16787-10 for ; Wed, 18 Jan 2006 07:15:30 -0400 (AST) X-Greylist: domain auto-whitelisted by SQLgrey- Received: from mail.gmx.net (mail.gmx.de [213.165.64.21]) by postgresql.org (Postfix) with SMTP id D764E9DC833 for ; Wed, 18 Jan 2006 07:15:25 -0400 (AST) Received: (qmail invoked by alias); 18 Jan 2006 11:15:22 -0000 Received: from 201-24-233-72.ctame704.dsl.brasiltelecom.net.br (EHLO servidor) [201.24.233.72] by mail.gmx.net (mp019) with SMTP; 18 Jan 2006 12:15:22 +0100 X-Authenticated: #15924888 Subject: Simple Question of Performance ILIKE or Lower From: Marcos To: pgsql-performance@postgresql.org Content-Type: text/plain Date: Wed, 18 Jan 2006 09:10:30 +0000 Message-Id: <1137575430.966.10.camel@servidor> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.131 required=5 tests=[AWL=0.131] X-Spam-Score: 0.131 X-Spam-Level: X-Archive-Number: 200601/290 X-Sequence-Number: 16768 Hi, I have a simple question about performance using two resources. What's have the best performance? lower( col1 ) LIKE lower( 'myquestion%' ) OR col1 ILIKE 'myquestion%' Thanks.