Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id 90CDB688C44 for ; Tue, 22 Jun 2010 14:23:57 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 26083-10 for ; Tue, 22 Jun 2010 17:23:50 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outgoing-mail.its.caltech.edu (outgoing-mail.its.caltech.edu [131.215.239.19]) by mail.postgresql.org (Postfix) with ESMTP id 168A7636780 for ; Tue, 22 Jun 2010 14:23:45 -0300 (ADT) Received: from fire-doxen.imss.caltech.edu (localhost [127.0.0.1]) by fire-doxen-postvirus (Postfix) with ESMTP id 13946328010 for ; Tue, 22 Jun 2010 10:23:44 -0700 (PDT) X-Spam-Scanned: at Caltech-IMSS on fire-doxen by amavisd-new Received: from webmail.caltech.edu (fire-griffen [192.168.1.231]) by fire-doxen-internal (Postfix) with ESMTP id 2A6803280C8 for ; Tue, 22 Jun 2010 10:23:43 -0700 (PDT) Received: from 131.215.15.78 (SquirrelMail authenticated user donghe) by webmail.caltech.edu with HTTP; Tue, 22 Jun 2010 10:23:43 -0700 (PDT) Message-ID: <3147.131.215.15.78.1277227423.squirrel@webmail.caltech.edu> Date: Tue, 22 Jun 2010 10:23:43 -0700 (PDT) Subject: postgres query is very slow From: donghe@caltech.edu To: pgsql-admin@postgresql.org User-Agent: SquirrelMail/1.4.8-5.el5_4.10 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.51 tagged_above=-10 required=5 tests=BAYES_50=0.8, RCVD_IN_DNSWL_MED=-2.3, T_RP_MATCHES_RCVD=-0.01 X-Spam-Level: X-Archive-Number: 201006/175 X-Sequence-Number: 34953 Hi, I built a database on postgres8.1, then I did VACUUM FULL ANALYZE, but the query is still slow. Has anybody an idea ? Thanks Dong