Received: from maia.hub.org (unknown [200.46.204.183])
	by mail.postgresql.org (Postfix) with ESMTP id DAF42634658
	for <pgsql-sql-postgresql.org@mail.postgresql.org>;
	Thu, 10 Dec 2009 19:08:18 -0400 (AST)
Received: from mail.postgresql.org ([200.46.204.86])
	by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia,
	port 10024) with ESMTP id 50220-05 for
	<pgsql-sql-postgresql.org@mail.postgresql.org>;
	Thu, 10 Dec 2009 23:08:11 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from sss.pgh.pa.us (sss.pgh.pa.us [66.207.139.130])
	by mail.postgresql.org (Postfix) with ESMTP id 7E0EA633689
	for <pgsql-sql@postgresql.org>; Thu, 10 Dec 2009 19:08:11 -0400 (AST)
Received: from sss2.sss.pgh.pa.us (tgl@localhost [127.0.0.1])
	by sss.pgh.pa.us (8.14.2/8.14.2) with ESMTP id nBAN87Eu028856;
	Thu, 10 Dec 2009 18:08:07 -0500 (EST)
To: Harald Fuchs <hari.fuchs@gmail.com>
cc: pgsql-sql@postgresql.org
Subject: Re: Window function trouble 
In-reply-to: <puy6la8rw7.fsf@srv.protecting.net> 
References: <pud42mahnr.fsf@srv.protecting.net>
	<pu7hsuafcq.fsf@srv.protecting.net>
	<25983.1260468559@sss.pgh.pa.us>
	<puy6la8rw7.fsf@srv.protecting.net>
Comments: In-reply-to Harald Fuchs <hari.fuchs@gmail.com>
	message dated "Thu, 10 Dec 2009 22:02:00 +0100"
Date: Thu, 10 Dec 2009 18:08:07 -0500
Message-ID: <28855.1260486487@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=-2.599 tagged_above=-10 required=5
	tests=BAYES_00=-2.599
X-Spam-Level: 
X-Archive-Number: 200912/31
X-Sequence-Number: 33469

Harald Fuchs <hari.fuchs@gmail.com> writes:
> That being said, I still think that PostgreSQL could do better - how
> about naming expression columns so that they are distinct from column
> names?

Even though the rules we use are pretty arbitrary, I'm hesitant to make
changes in them; it seems more likely to break existing applications
than to do anyone any good.

			regards, tom lane