Received: from localhost (maia-1.hub.org [200.46.204.191]) by postgresql.org (Postfix) with ESMTP id 67BB49FB25F for ; Fri, 2 Mar 2007 03:50:30 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.191]) (amavisd-new, port 10024) with ESMTP id 33748-04 for ; Fri, 2 Mar 2007 03:50:27 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from cenn.mc.mpls.visi.com (cenn.mc.mpls.visi.com [208.42.156.9]) by postgresql.org (Postfix) with ESMTP id 326429FB1D6 for ; Fri, 2 Mar 2007 03:50:26 -0400 (AST) Received: from [172.16.1.10] (adsl-71-146-131-14.dsl.pltn13.sbcglobal.net [71.146.131.14]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (No client certificate requested) by cenn.mc.mpls.visi.com (Postfix) with ESMTP id 724C382B8; Fri, 2 Mar 2007 01:50:25 -0600 (CST) Message-ID: <45E7D760.3040206@mithral.com> Date: Thu, 01 Mar 2007 23:50:56 -0800 From: Adam L Beberg User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: Oleg Bartunov Cc: pgsql-performance@postgresql.org Subject: Re: Array indexes, GIN? References: <45E7A108.9010802@mithral.com> <200703012147.38414.josh@agliodbs.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.051 tagged_above=0 required=5 tests=AWL, BAYES_50 X-Spam-Level: X-Archive-Number: 200703/48 X-Sequence-Number: 23453 Oleg Bartunov wrote on 3/1/2007 10:45 PM: > On Thu, 1 Mar 2007, Josh Berkus wrote: > >> Adam, >> >>> On the surface, looks like a job for GIN, but GIN seems undocumented, >>> specifically mentions it doesn't support the deletes we'll have many of >>> since it's designed for word searching apparently, the performance >>> implications are undocumented. I searched, I read, and even IRC'd, and >>> it seems like GIN is just not used much. >> >> It's new (as of 8.2). And the authors, Oleg and Teodor, are notorious >> for >> skimpy documetentation. > > We're getting better, we have 72 pages written about new FTS :) I'm guessing FTS is not quite done since you matched 'FTS' to 'GIN' ;) > GIN already has support for one dimensional arrays and intarray, > particularly, too has support of GiN. Great, so can GIN handle my situation? I'm a little unsure what to make of "Note: There is no delete operation for ET." in particular since I'm dealing with large numbers. -- Adam L. Beberg http://www.mithral.com/~beberg/