X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id ADBD2DB527 for ; Mon, 31 Oct 2005 16:30:29 -0400 (AST) 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 88261-10 for ; Mon, 31 Oct 2005 20:30:27 +0000 (GMT) Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130]) by svr1.postgresql.org (Postfix) with ESMTP id 56B40DB2FD for ; Mon, 31 Oct 2005 16:30:28 -0400 (AST) Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1]) by sss.pgh.pa.us (8.13.1/8.13.1) with ESMTP id j9VKUTHP018648; Mon, 31 Oct 2005 15:30:29 -0500 (EST) To: mark@mark.mielke.cc Cc: Merlin Moncure , Kelly Burkhart , pgsql-performance@postgresql.org Subject: Re: 8.x index insert performance In-reply-to: <20051031193547.GA3311@mark.mielke.cc> References: <6EE64EF3AB31D5448D0007DD34EEB3417DD725@Herge.rcsinc.local> <20051031193547.GA3311@mark.mielke.cc> Comments: In-reply-to mark@mark.mielke.cc message dated "Mon, 31 Oct 2005 14:35:47 -0500" Date: Mon, 31 Oct 2005 15:30:29 -0500 Message-ID: <18647.1130790629@sss.pgh.pa.us> From: Tom Lane X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.006 required=5 tests=[AWL=0.006] X-Spam-Score: 0.006 X-Spam-Level: X-Archive-Number: 200510/479 X-Sequence-Number: 15247 mark@mark.mielke.cc writes: > I've been trying to figure out whether null values are indexed or not from > the documentation. I was under the impression, that null values are not > stored in the index. You're mistaken, at least with regard to btree indexes. regards, tom lane