X-Original-To: pgsql-sql-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 7B26C3A2B81 for ; Sat, 4 Dec 2004 15:16:32 +0000 (GMT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 74695-03 for ; Sat, 4 Dec 2004 15:16:22 +0000 (GMT) Received: from md1.psixpress.com (md1.psixpress.com [154.32.105.205]) by svr1.postgresql.org (Postfix) with ESMTP id 3AF433A2B22 for ; Sat, 4 Dec 2004 15:16:24 +0000 (GMT) Received: from kaufbach.delug.de (138.pool1.dialup.cybernet-ag.de [195.143.124.138]) by md1.psixpress.com (MOS 3.4.4-GR) with ESMTP id CEE46738 (AUTH via LOGINBEFORESMTP); Sat, 4 Dec 2004 15:14:01 GMT Received: from kretschmer by kaufbach.delug.de with local (Exim 3.35 #1) id 1CabcC-0001VX-00 for pgsql-sql@postgresql.org; Sat, 04 Dec 2004 16:14:28 +0100 Date: Sat, 4 Dec 2004 16:14:28 +0100 From: Kretschmer Andreas To: pgsql-sql@postgresql.org Subject: Re: sum query Message-ID: <20041204151428.GA5772@kaufbach.delug.de> References: <20041203213340.M8095@narrowpathinc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.3.28i X-OS: Debian/GNU Linux - weil ich es mir Wert bin! X-GPG-Fingerprint: EE16 3C01 7B9C 10F7 2C8B 3B86 4DB3 D9EE 7F45 84DA X-Message-Flag: "Windows" is not the answer. "Windows" is the question and the answer is "no"! X-Lugdd: Gerd Kube X-Info: My name is root. Just root. And I am licensed to kill -9 X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.125 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO X-Spam-Level: X-Archive-Number: 200412/35 X-Sequence-Number: 19655 am Sat, dem 04.12.2004, um 12:38:11 -0000 mailte Andrew - Supernews folgendes: Thank you for the very good explanation. > Notice I haven't used either IN or UNION. Using IN in place of a join is > unwise (even though recent versions can sometimes plan it as though it were > a join); using UNION in place of an outer join is _very_ unwise. (In fact > UNION / INTERSECT / EXCEPT should normally be reserved for those cases > where there is simply no alternative.) Okay. I'm learning ;-) Andreas -- Diese Message wurde erstellt mit freundlicher Unterstützung eines freilau- fenden Pinguins aus artgerechter Freilandhaltung. Er ist garantiert frei von Micro$oft'schen Viren. (#97922 http://counter.li.org) GPG 7F4584DA Was, Sie wissen nicht, wo Kaufbach ist? Hier: N 51.05082°, E 13.56889° ;-)