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 ED8B59DC82A for ; Mon, 16 Jan 2006 12:54:15 -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 85766-09 for ; Mon, 16 Jan 2006 12:54:10 -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 A91549DC807 for ; Mon, 16 Jan 2006 12:54:07 -0400 (AST) Received: (qmail invoked by alias); 16 Jan 2006 16:54:05 -0000 Received: from 201-24-229-237.ctame704.dsl.brasiltelecom.net.br (EHLO servidor) [201.24.229.237] by mail.gmx.net (mp029) with SMTP; 16 Jan 2006 17:54:05 +0100 X-Authenticated: #15924888 Subject: Use of * affect the performance From: Marcos To: pgsql-performance@postgresql.org Content-Type: text/plain Date: Mon, 16 Jan 2006 14:49:28 +0000 Message-Id: <1137422968.1085.25.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=0.137 required=5 tests=[AWL=0.137] X-Spam-Score: 0.137 X-Spam-Level: X-Archive-Number: 200601/202 X-Sequence-Number: 16680 Hi, I always think that use of * in SELECT affected in the performance, becoming the search slowest. But I read in the a Postgres book's that it increases the speed of search. And now???? What the more fast? Thanks