X-Original-To: pgsql-docs-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 02587329EE8 for ; Mon, 4 Oct 2004 18:43:14 +0100 (BST) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 93025-08 for ; Mon, 4 Oct 2004 17:43:03 +0000 (GMT) Received: from hotmail.com (bay2-f6.bay2.hotmail.com [65.54.247.6]) by svr1.postgresql.org (Postfix) with ESMTP id F413B329DB1 for ; Mon, 4 Oct 2004 18:43:03 +0100 (BST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Mon, 4 Oct 2004 10:43:02 -0700 Received: from 128.174.244.232 by by2fd.bay2.hotmail.msn.com with HTTP; Mon, 04 Oct 2004 17:42:05 GMT X-Originating-IP: [128.174.244.232] X-Originating-Email: [dbresearch@hotmail.com] X-Sender: dbresearch@hotmail.com From: "Chengkai Li" To: pgsql-docs@postgresql.org Subject: directly construct a query plan Date: Mon, 04 Oct 2004 12:42:05 -0500 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 04 Oct 2004 17:43:02.0064 (UTC) FILETIME=[98715B00:01C4AA39] X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.0 tagged_above=0.0 required=5.0 tests= X-Spam-Level: X-Archive-Number: 200410/8 X-Sequence-Number: 2577 Hello everyone, I plan to directly construct a query plan without going through the query optimizer, by manipulating the various data structures for representing query plan tree and parse tree. Is there any facility inside/outside postgresql that can be of help? Is there any known issue/difficulty related to this? Thanks! Steve _________________________________________________________________ On the road to retirement? Check out MSN Life Events for advice on how to get there! http://lifeevents.msn.com/category.aspx?cid=Retirement