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 9652B4758F1 for ; Thu, 13 Mar 2003 16:46:36 -0500 (EST) Received: (qmail 27800 invoked from network); 13 Mar 2003 21:46:37 -0000 X-Authentication: inoue was authenticated by sd.tpf.co.jp at 13 Mar 2003 21:46:37 -0000 Received: from unknown (HELO PbgX) (219.61.40.14) by sd.tpf.co.jp with SMTP; 13 Mar 2003 21:46:37 -0000 From: "Hiroshi Inoue" To: "'Dave Page'" Cc: , , , , Subject: Re: Roadmap for FE/BE protocol redesign Date: Fri, 14 Mar 2003 06:46:31 +0900 Message-ID: <002f01c2e9aa$02e13160$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: <03AF4E498C591348A42FC93DEA9661B8259DA3@mail.vale-housing.co.uk> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Archive-Number: 200303/574 X-Sequence-Number: 36820 > -----Original Message----- > From: Dave Page > > > -----Original Message----- > > From: Hiroshi Inoue [mailto:Inoue@tpf.co.jp] > > Sent: 13 March 2003 10:04 > > To: Dave Page > > Cc: tgl@sss.pgh.pa.us; ZeugswetterA@spardat.at; > > pgman@candle.pha.pa.us; pgsql-hackers@postgresql.org; > > pgsql-interfaces@postgresql.org > > Subject: Re: [HACKERS] Roadmap for FE/BE protocol redesign > > > > > > Dave Page wrote: > > > > > > It's rumoured that Hiroshi Inoue once said: > > > > > > > > Does looking up by the catalog keys take no cost ? > > > > > > 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, the column name is there already. The column name isn't there. If a field has its alias name the alias is there. regards, Hiroshi Inoue