Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1abxWZ-0003wl-M4 for pgsql-hackers@arkaria.postgresql.org; Fri, 04 Mar 2016 21:44:39 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84) (envelope-from ) id 1abxWZ-0004KM-4A for pgsql-hackers@arkaria.postgresql.org; Fri, 04 Mar 2016 21:44:39 +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) (envelope-from ) id 1abxVE-0002Mn-EN for pgsql-hackers@postgresql.org; Fri, 04 Mar 2016 21:43:16 +0000 Received: from out.smtp-auth.no-ip.com ([8.23.224.60]) by makus.postgresql.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84) (envelope-from ) id 1abxVB-0000sp-HQ for pgsql-hackers@postgresql.org; Fri, 04 Mar 2016 21:43:15 +0000 X-No-IP: alvh.no-ip.org@noip-smtp X-Report-Spam-To: abuse@no-ip.com Received: from alvin.alvh.no-ip.org (unknown [186.37.84.32]) (Authenticated sender: alvh.no-ip.org@noip-smtp) by smtp-auth.no-ip.com (Postfix) with ESMTPA id 4947C4011F4; Fri, 4 Mar 2016 13:43:07 -0800 (PST) Received: by alvin.alvh.no-ip.org (Postfix, from userid 1000) id 0227974B; Fri, 4 Mar 2016 18:43:01 -0300 (CLT) Date: Fri, 4 Mar 2016 18:43:01 -0300 From: Alvaro Herrera To: David Rowley Cc: Tomas Vondra , Simon Riggs , Tom Lane , PostgreSQL-development Subject: Re: Performance improvement for joins where outer side is unique Message-ID: <20160304214301.GA743771@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-Pg-Spam-Score: -1.1 (-) 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 wonder why do we have two identical copies of clause_sides_match_join ... -- Álvaro Herrera 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