X-Original-To: pgsql-performance@postgresql.org Received: from spampd.localdomain (postgresql.org [64.49.215.8]) by postgresql.org (Postfix) with ESMTP id C76D7475B85 for ; Wed, 30 Apr 2003 21:51:39 -0400 (EDT) Received: from houston.familyhealth.com.au (unknown [203.59.48.253]) by postgresql.org (Postfix) with ESMTP id E5D0C475A45 for ; Wed, 30 Apr 2003 21:51:37 -0400 (EDT) Received: (from root@localhost) by houston.familyhealth.com.au (8.11.6p2/8.11.6) id h411pep53708 for pgsql-performance@postgresql.org; Thu, 1 May 2003 09:51:40 +0800 (WST) (envelope-from chriskl@familyhealth.com.au) Received: from mariner (mariner.internal [192.168.0.101]) by houston.familyhealth.com.au (8.11.6p2/8.9.3) with SMTP id h411pWJ53573; Thu, 1 May 2003 09:51:32 +0800 (WST) Message-ID: <0a1301c30f84$39a2dbe0$6500a8c0@fhp.internal> From: "Christopher Kings-Lynne" To: , "Achilleus Mantzios" Cc: References: <200304301148.18322.josh@agliodbs.com> Subject: Re: [SQL] 7.3 analyze & vacuum analyze problem Date: Thu, 1 May 2003 09:51:41 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-scanner: scanned by Inflex 0.1.5c - (http://www.inflex.co.za/) X-Spam-Status: No, hits=-13.4 required=5.0 tests=BAYES_20,QUOTED_EMAIL_TEXT,QUOTE_TWICE_1,REFERENCES autolearn=ham version=2.50 X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) X-Archive-Number: 200304/273 X-Sequence-Number: 1779 > > I am afraid it is not so simple. > > What i (unsuccessfully) implied is that > > dynacom=# VACUUM ANALYZE status ; > > VACUUM > > dynacom=# ANALYZE status ; > > ANALYZE > > dynacom=# > > You're right, that is mysterious. If you don't get a response from one of > the major developers on this forum, I suggest that you post those EXPLAIN > results to PGSQL-BUGS. Is it mysterious? The ANALYZE histogram algorithm does do random sampling doesn't it? Chris