X-Original-To: pgsql-performance-postgresql.org@postgresql.org
Received: from localhost (mx1.hub.org [200.46.208.251])
	by postgresql.org (Postfix) with ESMTP id 88EA49FB254
	for <pgsql-performance-postgresql.org@postgresql.org>;
	Mon,  7 Aug 2006 10:32:37 -0300 (ADT)
Received: from postgresql.org ([200.46.204.71])
	by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024)
	with ESMTP id 01236-04 for
	<pgsql-performance-postgresql.org@postgresql.org>;
	Mon,  7 Aug 2006 10:32:27 -0300 (ADT)
X-Greylist: from auto-whitelisted by SQLgrey-
Received: from mail.logix-tt.com (mail.logix-tt.com [212.211.145.186])
	by postgresql.org (Postfix) with ESMTP id F0CA89FB20F
	for <pgsql-performance@postgresql.org>;
	Mon,  7 Aug 2006 10:32:27 -0300 (ADT)
Received: from kingfisher.intern.logix-tt.com (p549D25A1.dip0.t-ipconnect.de
	[84.157.37.161])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by mail.logix-tt.com (Postfix) with ESMTP id 57564656B8;
	Mon,  7 Aug 2006 15:34:24 +0200 (CEST)
Received: from [127.0.0.1] (localhost [127.0.0.1])
	by kingfisher.intern.logix-tt.com (Postfix) with ESMTP id 80E51185CD0DC;
	Mon,  7 Aug 2006 15:32:39 +0200 (CEST)
Message-ID: <44D740F7.2020204@logix-tt.com>
Date: Mon, 07 Aug 2006 15:32:39 +0200
From: Markus Schaber <schabi@logix-tt.com>
Organization: Logical Tracking and Tracing International AG, Switzerland
User-Agent: Thunderbird 1.5.0.4 (X11/20060713)
MIME-Version: 1.0
To: pgsql-performance@postgresql.org
Cc: H Hale <hhale21@rogers.com>
Subject: Re: sub select performance due to seq scans
References: <20060802121732.94126.qmail@web88001.mail.re2.yahoo.com>
	<1154537296.7882.59.camel@state.g2switchworks.com>
In-Reply-To: <1154537296.7882.59.camel@state.g2switchworks.com>
X-Enigmail-Version: 0.94.0.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=0.168 tagged_above=0 required=5 tests=AWL,
	FORGED_RCVD_HELO
X-Spam-Level: 
X-Archive-Number: 200608/69
X-Sequence-Number: 20254

Hi, Scott and Hale,

Scott Marlowe wrote:
> Make sure analyze has been run and that the statistics are fairly
> accurate.

It might also help to increase the statistics_target on the column in
question.

HTH,
Markus

-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org