X-Original-To: pgsql-hackers@postgresql.org Received: from sd.tpf.co.jp (sd.tpf.co.jp [210.161.239.34]) by postgresql.org (Postfix) with SMTP id 08847477243 for ; Thu, 13 Mar 2003 10:05:33 -0500 (EST) Received: (qmail 22485 invoked from network); 13 Mar 2003 15:05:30 -0000 X-Authentication: inoue was authenticated by sd.tpf.co.jp at 13 Mar 2003 15:05:30 -0000 Received: from unknown (HELO PbgX) (219.61.40.14) by sd.tpf.co.jp with SMTP; 13 Mar 2003 15:05:30 -0000 From: "Hiroshi Inoue" To: "'Christopher Kings-Lynne'" Cc: "'Dave Page'" , , , , , Subject: Re: Roadmap for FE/BE protocol redesign Date: Fri, 14 Mar 2003 00:05:22 +0900 Message-ID: <000301c2e971$f9d57f50$0e283ddb@PbgX> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.3416 In-Reply-To: <20030313180705.T16715-100000@houston.familyhealth.com.au> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Importance: Normal X-Archive-Number: 200303/536 X-Sequence-Number: 36782 > -----Original Message----- > From: Christopher Kings-Lynne [mailto:chriskl@familyhealth.com.au] > > > > Obviously there is cost, but doing a lookup only on > demand, has got to be > > > cheaper in the long run than including the entire column > definition in the > > > message whether it's wanted or not? > > > > So if there are 100 fields, should we ask the backend > > the column name 100 times ? > > No, you do a single select that returns 100 results... Does a single select mean a fast select ? regards, Hiroshi Inoue