Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 7936364FC06 for ; Mon, 22 Sep 2008 18:04:49 -0300 (ADT) Received: from postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 07135-10 for ; Mon, 22 Sep 2008 18:04:48 -0300 (ADT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by postgresql.org (Postfix) with ESMTP id 1CA0F64FC04 for ; Mon, 22 Sep 2008 18:04:49 -0300 (ADT) Received: from news.hub.org (news.hub.org [200.46.204.72]) by news.hub.org (8.14.1/8.14.1) with ESMTP id m8ML4jXk038291 for ; Mon, 22 Sep 2008 18:04:45 -0300 (ADT) (envelope-from news@news.hub.org) Received: (from news@localhost) by news.hub.org (8.14.1/8.14.1/Submit) id m8MKe9Vt014685 for pgsql-performance@postgresql.org; Mon, 22 Sep 2008 17:40:09 -0300 (ADT) (envelope-from news) From: "Sabin Coanda" X-Newsgroups: pgsql.performance Subject: Re: Different execution plan Date: Mon, 22 Sep 2008 23:40:15 +0300 Organization: Hub.Org Networking Services Lines: 10 Message-ID: References: X-Complaints-To: usenet@news.hub.org X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3138 X-RFC2646: Format=Flowed; Response X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 To: pgsql-performance@postgresql.org X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200809/196 X-Sequence-Number: 31509 Hi there, I am still concerned about this problem, because there is a big differences between the two cases, and I don't know how to identify the problem. Can anybody help me, please ? TIA, Sabin