Received: from localhost (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 44C4A6333D4 for ; Wed, 1 Jul 2009 14:42:31 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 98351-07 for ; Wed, 1 Jul 2009 14:42:28 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by mail.postgresql.org (Postfix) with ESMTP id 1142D633208 for ; Wed, 1 Jul 2009 14:42:29 -0300 (ADT) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id n61HgR0R013654; Wed, 1 Jul 2009 13:42:27 -0400 (EDT) To: "Tena Sakai" cc: "Rob Sargent" , pgsql-sql@postgresql.org Subject: Re: it's not NULL, then what is it? In-reply-to: References: <690707f60906301849s68eb934ck33db888c87a39087@mail.gmail.com> <4A4B9096.5020704@gmail.com> Comments: In-reply-to "Tena Sakai" message dated "Wed, 01 Jul 2009 10:02:28 -0700" Date: Wed, 01 Jul 2009 13:42:27 -0400 Message-ID: <13653.1246470147@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.086 tagged_above=0 required=5 tests=AWL=0.086 X-Spam-Level: X-Archive-Number: 200907/6 X-Sequence-Number: 32747 "Tena Sakai" writes: >> So they were null, > Yes! >> and null turns out to be a seven-character blank string!? > I don't understand how that happens. Mr Tom Lane > hinted that it might be a bug in sprintf... Well, that was before I read the messages where it turned out that they were actually nulls after all. regards, tom lane