Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 6ACD59F93A2; Mon, 13 Aug 2007 17:20:51 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-maia, port 10024) with ESMTP id 04531-01-3; Mon, 13 Aug 2007 17:20:44 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from cronos.madness.at (madness.at [217.196.146.217]) by postgresql.org (Postfix) with ESMTP id A68889F9561; Mon, 13 Aug 2007 17:20:43 -0300 (ADT) Received: from mastermind.kaltenbrunner.cc ([83.215.233.60]) by cronos.madness.at with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1IKgOy-0005Kc-1C; Mon, 13 Aug 2007 22:20:40 +0200 Message-ID: <46C0BD13.107@kaltenbrunner.cc> Date: Mon, 13 Aug 2007 22:20:35 +0200 From: Stefan Kaltenbrunner User-Agent: Icedove 1.5.0.12 (X11/20070607) MIME-Version: 1.0 To: Julius Stroffek CC: pgsql-performance@postgresql.org, pgsql-hackers@postgresql.org Subject: Re: [HACKERS] Proposal: Pluggable Optimizer Interface References: <46C0B5E4.4020305@sun.com> In-Reply-To: <46C0B5E4.4020305@sun.com> X-Enigmail-Version: 0.94.2.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200708/137 X-Sequence-Number: 26267 Julius Stroffek wrote: > Hi All, > > Tomas Kovarik and I have presented at PGCon 2007 in Ottawa > the ideas about other possible optimizer algorithms to be used > in PostgreSQL. > > We are quite new to PostgreSQL project so it took us some > time to go through the sources end explore the possibilities > how things could be implemented. > > There is a proposal attached to this mail about the interface > we would like to implement for switching between different > optimizers. Please review it and provide a feedback to us. > Thank You. hmm - how does is that proposal different from what got implemented with: http://archives.postgresql.org/pgsql-committers/2007-05/msg00315.php Stefan