Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VgknH-0000xd-If for pgsql-hackers@arkaria.postgresql.org; Thu, 14 Nov 2013 00:28:23 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1VgknH-0002eS-0X for pgsql-hackers@arkaria.postgresql.org; Thu, 14 Nov 2013 00:28:23 +0000 Received: from makus.postgresql.org ([2001:4800:7903:4::125]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VgknF-0002d3-Lg for pgsql-hackers@postgresql.org; Thu, 14 Nov 2013 00:28:21 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VgknD-0001PY-BQ; Thu, 14 Nov 2013 00:28:21 +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 rAE0S8fH029320; Wed, 13 Nov 2013 19:28:08 -0500 From: Tom Lane To: Tatsuo Ishii cc: kleptog@svana.org, maumau307@gmail.com, laurenz.albe@wien.gv.at, robertmhaas@gmail.com, peter_e@gmx.net, arul@fast.au.fujitsu.com, stark@mit.edu, Maksym.Boguk@au.fujitsu.com, hlinnakangas@vmware.com, pgsql-hackers@postgresql.org Subject: Re: UTF8 national character data type support WIP patch and list of open issues. In-reply-to: <20131114.092428.5340552318651483.t-ishii@sraoss.co.jp> References: <20131112.155752.666523035722474275.t-ishii@sraoss.co.jp> <20131113201950.GA800@svana.org> <24268.1384374698@sss.pgh.pa.us> <20131114.092428.5340552318651483.t-ishii@sraoss.co.jp> Comments: In-reply-to Tatsuo Ishii message dated "Thu, 14 Nov 2013 09:24:28 +0900" Date: Wed, 13 Nov 2013 19:28:08 -0500 Message-ID: <29319.1384388888@sss.pgh.pa.us> X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org Tatsuo Ishii writes: >> MULE is completely evil. >> It has N different encodings for the same character, > What's wrong with that? It aims that in the first place. It greatly complicates comparisons --- at least, if you'd like to preserve the principle that strings that appear the same are equal. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers