Received: from localhost (unknown [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 347952E0107 for ; Sat, 22 Mar 2008 13:51:59 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 93666-04 for ; Sat, 22 Mar 2008 13:51:55 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from 137086.vserver.de (vs137086.vserver.de [62.75.137.86]) by postgresql.org (Postfix) with ESMTP id 4D9D72E0133 for ; Sat, 22 Mar 2008 13:51:55 -0300 (ADT) Received: from a-kretschmer.de (p54B3A206.dip0.t-ipconnect.de [84.179.162.6]) (authenticated bits=0) by 137086.vserver.de (8.12.8/8.12.8) with ESMTP id m2MGpsvk018318 for ; Sat, 22 Mar 2008 17:51:54 +0100 Received: from kretschmer by a-kretschmer.de with local (Exim 4.61) (envelope-from ) id 1Jd70Z-00056A-IP for pgsql-performance@postgresql.org; Sat, 22 Mar 2008 17:55:51 +0100 Date: Sat, 22 Mar 2008 17:55:51 +0100 From: Andreas Kretschmer To: pgsql-performance@postgresql.org Subject: Re: Views and functions returning sets of records Message-ID: <20080322165551.GA19460@KanotixBox> References: <6A737ADC-2A11-4A01-8ACE-C439E4297273@mac.com> <29705.1206203639@sss.pgh.pa.us> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <29705.1206203639@sss.pgh.pa.us> 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 User-Agent: mutt-ng 1.5.9i (Linux) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200803/432 X-Sequence-Number: 29386 Tom Lane schrieb: > Giorgio Valoti writes: > > maybe it’s a naive question but I was wondering if there is any > > difference, from a performance point of view, between a view and a > > function performing the same task, > > Yes. Usually the view will win. *smile* Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknow) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°