Received: from maia.hub.org (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id 195AD63473F for ; Tue, 26 May 2009 12:48:32 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 33621-10 for ; Tue, 26 May 2009 12:48:31 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from perseverance.services.encs.concordia.ca (perseverance-96.encs.concordia.ca [132.205.96.94]) by mail.postgresql.org (Postfix) with ESMTP id 090F263473B for ; Tue, 26 May 2009 12:48:30 -0300 (ADT) Received: from cacao.encs.concordia.ca (emilu@cacao.encs.concordia.ca [132.205.47.225]) by perseverance.services.encs.concordia.ca (envelope-from emilu@encs.concordia.ca) (8.13.7/8.13.7) with ESMTP id n4QFmQA6014633; Tue, 26 May 2009 11:48:26 -0400 Message-ID: <4A1C0F49.5030307@encs.concordia.ca> Date: Tue, 26 May 2009 11:48:25 -0400 From: Emi Lu Reply-To: emilu@encs.concordia.ca User-Agent: Thunderbird 2.0.0.21 (X11/20090302) MIME-Version: 1.0 To: ulka salvi , PostgreSQL SQL List Subject: Re: Allow column type to change without worrying about view dependencies References: <4A16BCCD.1020508@encs.concordia.ca> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.58 on perseverance.encs.concordia.ca at 2009/05/26 11:48:26 EDT X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none X-Spam-Level: X-Archive-Number: 200905/111 X-Sequence-Number: 32603 ulka salvi wrote: >> >> u can try this >> SELECT a,b,c,CAST(d AS float) > AS N 'd',e,f,g INTO dbo.newtable > > Ulka Did not follow. Example, create view v_test as select * from test1; create table test(col1 varchar(12)); I'd like to: alter table test alter column col1 type varchar(128); Tried your suggested: create or replace view v_test as select CAST( col1 as varchar(128)) from test; Got: cannot change data type of view column "col1" -- Lu Ying