Received: from localhost (maia-4.hub.org [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 5E4129FB822 for ; Tue, 6 Mar 2007 11:17:45 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-new, port 10024) with ESMTP id 76723-01 for ; Tue, 6 Mar 2007 11:17:26 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.126.171]) by postgresql.org (Postfix) with ESMTP id B8FD99FB788 for ; Tue, 6 Mar 2007 11:17:25 -0400 (AST) Received: from [194.25.154.138] (helo=webserv.wug.de) by mrelayeu.kundenserver.de (node=mrelayeu4) with ESMTP (Nemesis), id 0ML21M-1HObPn1s1T-0001ka; Tue, 06 Mar 2007 16:17:23 +0100 Received: from kretschmer by webserv.wug.de with local (Exim 3.36 #1) id 1HObPj-0006o5-00 for pgsql-sql@postgresql.org; Tue, 06 Mar 2007 16:17:19 +0100 Date: Tue, 6 Mar 2007 16:17:19 +0100 From: "A. Kretschmer" To: pgsql-sql@postgresql.org Subject: Re: Selecting exactly one row for each column value Message-ID: <20070306151719.GC24007@a-kretschmer.de> References: <82hcsy4do7.fsf@mid.bfk.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <82hcsy4do7.fsf@mid.bfk.de> X-OS: Debian/GNU Linux - weil ich es mir Wert bin! X-Message-Flag: "Windows" is not the answer. "Windows" is the question and the answer is "no"! User-Agent: Mutt/1.5.9i X-Provags-ID: kundenserver.de abuse@kundenserver.de login:51ea9561fc3f6d9539a2acd743e4748c X-Provags-ID2: V01U2FsdGVkX19MxRVx/y3Mj5iRP4CnMAVTpLQtF231MnmuP4D gxX5J8yz4MljLy6plFHnRy8LpwBdFJaQ8x3QmHaNLDcCQUY9uT 4IynLW1mQwNKUPItj/9ngZx9rOtF9b1 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.312 tagged_above=0 required=5 tests=AWL, BAYES_50, SPF_HELO_PASS X-Spam-Level: X-Archive-Number: 200703/43 X-Sequence-Number: 27681 am Tue, dem 06.03.2007, um 16:03:36 +0100 mailte Florian Weimer folgendes: > Is there a better way to implement this? DISTINCT ON() http://www.postgresql.org/docs/current/static/sql-select.html#SQL-DISTINCT Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net