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 8368847592C for ; Thu, 13 Mar 2003 01:26:36 -0500 (EST) Received: (qmail 28326 invoked from network); 13 Mar 2003 06:26:35 -0000 Received: from unknown (HELO viscomail.tpf.co.jp) (100.0.0.108) by sd2.tpf-fw-c.co.jp with SMTP; 13 Mar 2003 06:26:35 -0000 Received: from tpf.co.jp (3dgateway1 [126.0.1.60]) by viscomail.tpf.co.jp (8.8.8+Sun/8.8.8) with ESMTP id PAA29982; Thu, 13 Mar 2003 15:26:34 +0900 (JST) Message-ID: <3E702552.DA8A29A9@tpf.co.jp> Date: Thu, 13 Mar 2003 15:29:38 +0900 From: Hiroshi Inoue X-Mailer: Mozilla 4.73 [ja] (Windows NT 5.0; U) X-Accept-Language: ja MIME-Version: 1.0 To: Tom Lane Cc: Dave Page , Zeugswetter Andreas SB SD , Bruce Momjian , pgsql-hackers@postgresql.org, pgsql-interfaces@postgresql.org Subject: Re: Roadmap for FE/BE protocol redesign References: <03AF4E498C591348A42FC93DEA9661B8259D8D@mail.vale-housing.co.uk> <27130.1047484194@sss.pgh.pa.us> Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit X-Archive-Number: 200303/525 X-Sequence-Number: 36771 Tom Lane wrote: > > "Dave Page" writes: > > No, but with them we can avoid cluttering the wire protocol with fields > > for all this, and the JDBC required data. With 2 numeric columns > > (attrelid, attnum), any application/interface can query the system > > catalogs easily for whatever extra info they like. > > This is my feeling also. We shouldn't try to guess in the protocol > exactly what set of information will be wanted by a frontend; we should > just provide the catalog keys needed to look up whatever is wanted. Does looking up by the catalog keys take no cost ? regards, Hiroshi Inoue http://www.geocities.jp/inocchichichi/psqlodbc/