X-Original-To: pgsql-hackers@postgresql.org Received: from fuji.krosing.net (unknown [194.204.44.118]) by postgresql.org (Postfix) with ESMTP id 412194758E6; Thu, 13 Mar 2003 05:08:03 -0500 (EST) Received: from fuji.krosing.net (lo [127.0.0.1]) by fuji.krosing.net (8.12.7/8.12.7) with ESMTP id h2DA7WvT003690; Thu, 13 Mar 2003 12:07:33 +0200 Received: (from hannu@localhost) by fuji.krosing.net (8.12.7/8.12.7/Submit) id h2DA7Tq0003688; Thu, 13 Mar 2003 12:07:29 +0200 X-Authentication-Warning: fuji.krosing.net: hannu set sender to hannu@tm.ee using -f Subject: Re: Roadmap for FE/BE protocol redesign From: Hannu Krosing To: Hiroshi Inoue Cc: Dave Page , tgl@sss.pgh.pa.us, ZeugswetterA@spardat.at, pgman@candle.pha.pa.us, pgsql-hackers@postgresql.org, pgsql-interfaces@postgresql.org In-Reply-To: <3E705780.1D3FE1C5@tpf.co.jp> References: <03AF4E498C591348A42FC93DEA9661B8259D8D@mail.vale-housing.co.uk> <27130.1047484194@sss.pgh.pa.us> <3E702552.DA8A29A9@tpf.co.jp> <50073.80.177.99.193.1047549156.squirrel@ssl.vale-housing.co.uk> <3E705780.1D3FE1C5@tpf.co.jp> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1047550047.3223.31.camel@fuji.krosing.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-1) Date: 13 Mar 2003 12:07:28 +0200 X-Archive-Number: 200303/535 X-Sequence-Number: 36781 Hiroshi Inoue kirjutas N, 13.03.2003 kell 12:03: > Dave Page wrote: > > > > > 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 ? or once for all columns if you prefer using IN. > regards, > Hiroshi Inoue > http://www.geocities.jp/inocchichichi/psqlodbc/ > > ---------------------------(end of broadcast)--------------------------- > TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org