Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1ifH5D-0007pt-Jk for pgsql-hackers@arkaria.postgresql.org; Thu, 12 Dec 2019 05:32:15 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1ifH5B-00064C-RK for pgsql-hackers@arkaria.postgresql.org; Thu, 12 Dec 2019 05:32:13 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1ifH5B-000645-I0 for pgsql-hackers@lists.postgresql.org; Thu, 12 Dec 2019 05:32:13 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1ifH54-00021a-UH for pgsql-hackers@postgresql.org; Thu, 12 Dec 2019 05:32:13 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id xBC5Vq5Z003243; Thu, 12 Dec 2019 00:31:52 -0500 From: Tom Lane To: Thomas Munro cc: Julien Rouhaud , Robert Haas , Michael Paquier , Laurenz Albe , Peter Eisentraut , Douglas Doole , Christoph Berg , Pg Hackers Subject: Re: Collation versioning In-reply-to: References: <20191108013654.GA1768@paquier.xyz> <3c3b9ff84d21acf3188558928249d04db84ea2e9.camel@cybertec.at> <20191128045041.GW237562@paquier.xyz> Comments: In-reply-to Thomas Munro message dated "Thu, 12 Dec 2019 18:09:44 +1300" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <3241.1576128712.1@sss.pgh.pa.us> Date: Thu, 12 Dec 2019 00:31:52 -0500 Message-ID: <3242.1576128712@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Thomas Munro writes: > Erm, but I shouldn't have to reindex my hash indexes (at least not > until someone invents collation-based equality and therefore > necessarily also collation-based hashing). How can we exclude that? Um, we already invented that with nondeterministic collations, no? regards, tom lane