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 EDC36D1B19F for ; Thu, 8 Jul 2004 04:28:33 -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 71755-04 for ; Thu, 8 Jul 2004 07:28:34 +0000 (GMT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by svr1.postgresql.org (Postfix) with ESMTP id 6E782D1B18F for ; Thu, 8 Jul 2004 04:28:32 -0300 (ADT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by news.hub.org (8.12.9/8.12.9) with ESMTP id i687SVi7036361 for ; Thu, 8 Jul 2004 07:28:31 GMT (envelope-from news@news.hub.org) Received: (from news@localhost) by news.hub.org (8.12.9/8.12.9/Submit) id i687QFRr036107 for pgsql-sql@postgresql.org; Thu, 8 Jul 2004 07:26:15 GMT Date: Thu, 08 Jul 2004 09:26:15 +0200 From: Gerwin Philippo User-Agent: Mozilla Thunderbird 0.7.1 (Windows/20040626) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Newsgroups: comp.databases.postgresql.sql Subject: Re: append columns that are null References: <40ec1043$0$559$e4fe514c@news.xs4all.nl> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Lines: 18 Message-ID: <40ecf718$0$36169$e4fe514c@news.xs4all.nl> X-Complaints-To: abuse@xs4all.nl To: pgsql-sql@postgresql.org X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.0 tagged_above=0.0 required=5.0 tests= X-Spam-Level: X-Archive-Number: 200407/49 X-Sequence-Number: 18301 THX! didn't know that one yet :) nobody wrote: > "Gerwin Philippo" wrote in message > news:40ec1043$0$559$e4fe514c@news.xs4all.nl... > >>I have function that appends 2 columns, like >>"new.field1 = new.field2||new.field3", >>but when field 3 is null, then the entire outcome is null, while I >>expected just field2, since when I append nothing to field2, I get >>field2, right? >>Is this standard behaviour, and if so, is there another append function >>that I can use that doesn't behave like this? > > > COALESCE is your friend... > >