Received: from localhost (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id AA28365042F for ; Wed, 5 Nov 2008 11:35:07 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 06950-01-5 for ; Wed, 5 Nov 2008 11:35:05 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by mail.postgresql.org (Postfix) with ESMTP id 18872650430 for ; Wed, 5 Nov 2008 11:34:54 -0400 (AST) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id mA5FYp8x014532; Wed, 5 Nov 2008 10:34:51 -0500 (EST) To: "=?ISO-8859-5?B?svbi0Nv22SDC2Nzn2OjY3Q==?=" cc: pgsql-performance@postgresql.org Subject: Re: PostgreSQL OR performance In-reply-to: <331e40660811050312u552cab53ifa88e493e1c4f7ac@mail.gmail.com> References: <331e40660811050312u552cab53ifa88e493e1c4f7ac@mail.gmail.com> Comments: In-reply-to "=?ISO-8859-5?B?svbi0Nv22SDC2Nzn2OjY3Q==?=" message dated "Wed, 05 Nov 2008 13:12:32 +0200" Date: Wed, 05 Nov 2008 10:34:51 -0500 Message-ID: <14531.1225899291@sss.pgh.pa.us> From: Tom Lane X-Archive-Number: 200811/9 X-Sequence-Number: 31740 "=?ISO-8859-5?B?svbi0Nv22SDC2Nzn2OjY3Q==?=" writes: > For a long time already I can see very poor OR performance in postgres. If you would provide a concrete example rather than handwaving, we might be able to offer some advice ... regards, tom lane