Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id 5FC8A1337BA8 for ; Thu, 21 Apr 2011 03:44:10 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 84210-07 for ; Thu, 21 Apr 2011 06:44:03 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mail.postgresql.org (Postfix) with ESMTP id A36DC1337B93 for ; Thu, 21 Apr 2011 03:44:02 -0300 (ADT) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1QCncL-00009A-RV for pgsql-admin@postgresql.org; Thu, 21 Apr 2011 08:43:57 +0200 Received: from 80.150.102.194 ([80.150.102.194]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 21 Apr 2011 08:43:57 +0200 Received: from spam_eater by 80.150.102.194 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 21 Apr 2011 08:43:57 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: pgsql-admin@postgresql.org From: Thomas Kellerer Subject: Re: ERROR: column "time" cannot be cast to type bigint Date: Thu, 21 Apr 2011 08:43:48 +0200 Lines: 20 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 80.150.102.194 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.23) Gecko/20090812 Thunderbird/2.0.0.23 Mnenhy/0.7.6.666 In-Reply-To: X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.035 tagged_above=-10 required=5 tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_SORBS_WEB=0.77, RCVD_NUMERIC_HELO=1.164, T_RP_MATCHES_RCVD=-0.01, T_TO_NO_BRKTS_FREEMAIL=0.01 X-Spam-Level: X-Archive-Number: 201104/198 X-Sequence-Number: 37379 Saurabh Agrawal, 20.04.2011 08:38: > Hi All, > > I am trying to alter column from "timestamp without timezone" to > "bigint" but getting below error: > > #ALTER TABLE test ALTER column time type bigint; > #ERROR: column "time" cannot be cast to type bigint > > Is there any other method for alter column to bigint. This should do it: ALTER TABLE test ALTER column time type bigint USING extract(epoch from time) (Btw: I would avoid column names that are keywords like "time") Thomas