From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Robert Treat <xzilla@users.sourceforge.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Larry Rosenman <ler@lerctr.org>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: [SQL] LIMIT 1 FOR UPDATE or FOR UPDATE LIMIT 1?
Date: Wed, 28 Aug 2002 10:26:53 -0400 (EDT)
Message-ID: <200208281426.g7SEQrd14994@candle.pha.pa.us> (raw)
In-Reply-To: <1030544652.3216.7.camel@camel>
Robert Treat wrote:
> On Wed, 2002-08-28 at 10:11, Tom Lane wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > Larry Rosenman wrote:
> > >> Why? If both old and new are acceptable, why not document it?
> > >> (Just curious, I'm not wedded to it).
> >
> > > Well, showing both versions adds confusion for no good reason,
> >
> > Yes, particularly considering that LIMIT ... FOR UPDATE corresponds
> > to the implementation behavior (LIMIT acts before FOR UPDATE) while
> > FOR UPDATE ... LIMIT does not.
> >
> > I concur with documenting only the preferred form (though there should
> > be a note in gram.y explaining that we're supporting the old syntax
> > for backward compatibility).
> >
>
> Doesn't the need for a note explaining that we're supporting the old
> syntax say to you that the documentation also needs to say we support
> the old syntax? I can see the bug reports now saying "this is clearly
> not what it says in the docs"...
Well, people would be using the docs only to learn the suggested syntax,
not every syntax. COPY supports the old syntax, but has a new one for
7.3.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: pgman@candle.pha.pa.us, xzilla@users.sourceforge.net, tgl@sss.pgh.pa.us, ler@lerctr.org, pgsql-hackers@postgresql.org
Subject: Re: [SQL] LIMIT 1 FOR UPDATE or FOR UPDATE LIMIT 1?
In-Reply-To: <200208281426.g7SEQrd14994@candle.pha.pa.us>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox