X-Original-To: pgsql-sql-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 62712D6805 for ; Mon, 7 Nov 2005 10:27:20 -0400 (AST) 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 09710-01 for ; Mon, 7 Nov 2005 14:27:16 +0000 (GMT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.126.187]) by svr1.postgresql.org (Postfix) with ESMTP id D3632D7D2C for ; Mon, 7 Nov 2005 10:27:17 -0400 (AST) Received: from [194.25.154.138] (helo=webserv.wug.de) by mrelayeu.kundenserver.de (node=mrelayeu5) with ESMTP (Nemesis), id 0ML25U-1EZ7xx33yN-0008By; Mon, 07 Nov 2005 15:27:21 +0100 Received: from kretschmer by webserv.wug.de with local (Exim 3.36 #1) id 1EZ7yO-00057j-00 for pgsql-sql@postgresql.org; Mon, 07 Nov 2005 15:27:48 +0100 Date: Mon, 7 Nov 2005 15:27:48 +0100 From: "A. Kretschmer" To: pgsql-sql@postgresql.org Subject: Re: Extract week from date, start with sunday Message-ID: <20051107142748.GW9910@webserv.wug-glas.de> Mail-Followup-To: "A. Kretschmer" , pgsql-sql@postgresql.org References: <20051107140036.11DC6D6873@svr1.postgresql.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051107140036.11DC6D6873@svr1.postgresql.org> X-DEST: 208 X-MSMail-Priority: High X-Message-Flag: Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) X-OS: Linux - weil ich es mir Wert bin! X-Info: registrierter Linux-User 97922 http://counter.li.org User-Agent: mutt-ng 1.5.9i (Linux) X-Provags-ID: kundenserver.de abuse@kundenserver.de login:51ea9561fc3f6d9539a2acd743e4748c X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=1.421 required=5 tests=[AWL=0.027, MISSING_MIMEOLE=1.394] X-Spam-Score: 1.421 X-Spam-Level: * X-Archive-Number: 200511/65 X-Sequence-Number: 23316 am 07.11.2005, um 14:47:35 +0100 mailte Robert Blixt folgendes: > > Hi, > > > I am currently extracting my weeks from a date like this.. > > SELECT INTO extractweek EXTRACT( week FROM ldate ); > > This works fine, except that this assumes (according > to ISO standard) that weeks starts with Monday. > > I need the weeks to start with Sunday instead, otherwise > I will not get the correct week. > > Is there a workaround for this? Add 1 day to ldate. test=# select to_char('2005-11-05'::date+'1 day'::interval, 'IW'); to_char --------- 44 (1 row) test=# select to_char('2005-11-06'::date+'1 day'::interval, 'IW'); to_char --------- 45 (1 row) HTH, Andreas -- Andreas Kretschmer (Kontakt: siehe Header) Heynitz: 035242/47212, D1: 0160/7141639 GnuPG-ID 0x3FFF606C http://wwwkeys.de.pgp.net === Schollglas Unternehmensgruppe ===