X-Original-To: pgsql-sql-postgresql.org@postgresql.org Received: from localhost (mx1.hub.org [200.46.208.251]) by postgresql.org (Postfix) with ESMTP id 31BA39FB22A for ; Fri, 28 Jul 2006 05:43:47 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.208.251]) (amavisd-new, port 10024) with ESMTP id 19806-10 for ; Fri, 28 Jul 2006 05:43:33 -0300 (ADT) X-Greylist: delayed 00:08:17.949704 by SQLgrey- Received: from smtp5.libero.it (smtp5.libero.it [193.70.192.55]) by postgresql.org (Postfix) with ESMTP id 4D5869FB259 for ; Fri, 28 Jul 2006 05:43:34 -0300 (ADT) Received: from localhost (172.16.1.15) by smtp5.libero.it (7.0.027-DD01) id 449926410327F953 for pgsql-sql@postgresql.org; Fri, 28 Jul 2006 10:35:03 +0200 Received: from smtp3.libero.it ([172.16.1.53]) by localhost (asav11.libero.it [193.70.192.93]) (amavisd-new, port 10024) with ESMTP id 11436-03 for ; Fri, 28 Jul 2006 10:35:03 +0200 (CEST) Received: from [151.55.240.219] (unknown [151.55.240.219]) by smtp3.libero.it (Postfix) with ESMTP id 2BF60ABE54 for ; Fri, 28 Jul 2006 10:35:02 +0200 (MEST) Message-ID: <44C9CCC8.8020304@libero.it> Date: Fri, 28 Jul 2006 10:37:28 +0200 From: Manlio Perillo User-Agent: Mozilla Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: pgsql-sql@postgresql.org Subject: primary keys as TEXT Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit X-Scanned: with antispam and antivirus automated system at libero.it X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests= X-Spam-Level: X-Archive-Number: 200607/351 X-Sequence-Number: 25925 Hi. There can be performancs problems in having primary keys of type TEXT? What about having a primary key of 3 columns (all of type TEXT)? Regards Manlio Perillo