Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bhIUt-0004xm-Jw for pgsql-hackers@arkaria.postgresql.org; Tue, 06 Sep 2016 15:41:15 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1bhIUt-0008Vy-33 for pgsql-hackers@arkaria.postgresql.org; Tue, 06 Sep 2016 15:41:15 +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_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1bhIUr-0008SF-84 for pgsql-hackers@postgresql.org; Tue, 06 Sep 2016 15:41:13 +0000 Received: from out4-smtp.messagingengine.com ([66.111.4.28]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1bhIUo-0001cq-8y for pgsql-hackers@postgresql.org; Tue, 06 Sep 2016 15:41:12 +0000 Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.nyi.internal (Postfix) with ESMTP id E5EB520663; Tue, 6 Sep 2016 11:41:08 -0400 (EDT) Received: from frontend1 ([10.202.2.160]) by compute2.internal (MEProxy); Tue, 06 Sep 2016 11:41:08 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-sasl-enc:x-sasl-enc; s=smtpout; bh=vcJ+mtsqjyF31Um ApTMrxz8TejE=; b=IstS8kunLUclI6jheD1ulPO6KGBH0ieg2QsbZgc0OUmTcd8 ZPrSfxrAZyjsTnmHEmBb8sA/S2dMEhPQNastucK5djM/BuiWSBRmF7TcdHo1ntIB rgzUrasG66aOQBizx7J3+fUTQ8itPOlYYgjmX4cWKGr10QnVQpEJIIImb+es= X-Sasl-enc: xTXUeyBU6WchZ5hTSpy7g61bmlEYp44gvfDI32ELbBF9 1473176468 Received: from april.local (c-73-13-66-39.hsd1.pa.comcast.net [73.13.66.39]) by mail.messagingengine.com (Postfix) with ESMTPA id A0F27F29CC; Tue, 6 Sep 2016 11:41:08 -0400 (EDT) Subject: Re: ICU integration To: Peter Geoghegan References: <85364fde-091f-bbc0-fec2-e3ede39840a6@2ndquadrant.com> Cc: pgsql-hackers From: Peter Eisentraut Organization: 2ndQuadrant Message-ID: <781480a9-10d3-04d4-ca7d-244bf80e1e08@2ndquadrant.com> Date: Tue, 6 Sep 2016 11:41:08 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -2.6 (--) 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 On 8/31/16 1:32 PM, Peter Geoghegan wrote: > ICU is happy to have multiple versions > of a collation at a time, and you'll probably retain the old collation > version in ICU. > > Even if your old collation version isn't available in a new ICU > release (which I think is unlikely in practice) I think this is wrong, or I have misunderstood the ICU documentation. There is no way to "choose" a collation version. You can only record the one you have gotten and check that you get the same one next time. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers