Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEACL-0007uO-4D for pgsql-hackers@arkaria.postgresql.org; Mon, 13 Nov 2017 08:34:29 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1eEACK-0003Ln-L0 for pgsql-hackers@arkaria.postgresql.org; Mon, 13 Nov 2017 08:34:28 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1eEACJ-0003Lb-Ur for pgsql-hackers@postgresql.org; Mon, 13 Nov 2017 08:34:28 +0000 Received: from mail.postgrespro.ru ([93.174.131.138]) by makus.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1eEACC-0008BC-86 for pgsql-hackers@postgresql.org; Mon, 13 Nov 2017 08:34:26 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.postgrespro.ru (Postfix) with ESMTP id 83E7021C1D0F; Mon, 13 Nov 2017 11:34:17 +0300 (MSK) X-Virus-Scanned: Debian amavisd-new at postgrespro.ru Received: from [192.168.27.132] (unknown [192.168.27.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mail.postgrespro.ru (Postfix) with ESMTPSA id 47E6D21C0931; Mon, 13 Nov 2017 11:34:17 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=postgrespro.ru; s=mail; t=1510562057; bh=5NUrmRtS+k0gYNXnDYdHtgv3w5OD/jyMsDvQqdf8yKo=; h=Subject:To:Cc:References:From:Date:In-Reply-To; b=m8tCqDpsaXTbdczkn47hrUVQN+T9Cg+gR08a0As8/PuIKZ27/TRhGqn4s+k/AKY2e 7kbAOk2iGsrhldWreKMYJbDCLtftF3+J0hKuF4LLezt9Cdr1IwzVoUOU96ptZty/zh sl9WyMf/W9phbQIslUmx/zRleCCuMJQhRQ6EX9cI= Subject: Re: index-only count(*) for indexes supporting bitmap scans To: Tom Lane Cc: Alexey Chernyshov , pgsql-hackers@postgresql.org References: <239a8955-c0fc-f506-026d-c837e86c827b@postgrespro.ru> <122a32e4-73bd-ec85-9dad-a72729635c65@postgrespro.ru> <20170904121730.18925.18766.pgcf@coridan.postgresql.org> <5974.1509573988@sss.pgh.pa.us> From: Alexander Kuzmenkov Message-ID: <0512c28b-ff31-c7c8-9f03-39338976cd23@postgrespro.ru> Date: Mon, 13 Nov 2017 11:34:17 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <5974.1509573988@sss.pgh.pa.us> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US 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 > I've pushed the executor part of this, but mostly not the planner part, > because I didn't think the latter was anywhere near ready for prime > time: the regression test changes it was causing were entirely bogus. > Hi Tom, Thanks for the commit and the explanation. I'll try to address your comments if I continue working on the planner part. -- Alexander Kuzmenkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers