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 6300EDAF35 for ; Wed, 26 Oct 2005 04:00:27 -0300 (ADT) 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 51443-10 for ; Wed, 26 Oct 2005 07:00:22 +0000 (GMT) Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by svr1.postgresql.org (Postfix) with ESMTP id 51F03DAF14 for ; Wed, 26 Oct 2005 04:00:23 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.1/8.13.1) with ESMTP id j9Q70Ox1002828; Wed, 26 Oct 2005 03:00:24 -0400 (EDT) To: dave.bath@unix.net Cc: pgsql-sql@postgresql.org Subject: Re: why vacuum In-reply-to: <200510261622.40874.dave.bath@unix.net> References: <200510261015.17623.lawgon@thenilgiris.com> <2123.1130303680@sss.pgh.pa.us> <200510261622.40874.dave.bath@unix.net> Comments: In-reply-to "Bath, David" message dated "Wed, 26 Oct 2005 16:22:40 +1000" Date: Wed, 26 Oct 2005 03:00:24 -0400 Message-ID: <2827.1130310024@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.006 required=5 tests=[AWL=0.006] X-Spam-Level: X-Archive-Number: 200510/310 X-Sequence-Number: 23163 "Bath, David" writes: > ... Note that Sybase/MS-SQL's > check constraint model asserts the constraint BEFORE the trigger, which > discourages you from attempting to check and handle meaning of data! Er, doesn't PG do it that way too? regards, tom lane