Re: [HACKERS] [PATCHES] Values list-of-targetlists patch for comments (was Re:

From: David Fetter <david(at)fetter(dot)org>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>, Michael Glaesemann <grzm(at)seespotcode(dot)net>, Joe Conway <mail(at)joeconway(dot)com>, pgsql-patches(at)postgresql(dot)org, pgsql-docs(at)postgresql(dot)org
Subject: Re: [HACKERS] [PATCHES] Values list-of-targetlists patch for comments (was Re:
Date: 2006-08-09 16:22:42
Message-ID: 20060809162242.GA19092@fetter.org
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On Wed, Aug 09, 2006 at 03:05:02PM +0200, Peter Eisentraut wrote:
> Am Freitag, 4. August 2006 04:50 schrieb Tom Lane:
> > I'd like to see us refactor the docs as necessary to reflect that
> > idea. Peter is right that this needs some discussion in
> > syntax.sgml as well as in the reference pages --- but I'm still
> > not very clear on how the presentation should go.
>
> I'm beginning to think that VALUES might be a separate command after
> all.

What's below definitely bolsters that idea :)

postgres=# VALUES(1);
column1
---------
1
(1 row)

However, there are some oddities:

postgres=# SELECT * FROM (VALUES (1,2)) AS foo(bar,baz);
bar | baz
-----+-----
1 | 2
(1 row)

postgres=# (VALUES (1,2)) AS foo(bar,baz);
ERROR: syntax error at or near "AS"
LINE 1: (VALUES (1,2)) AS foo(bar,baz);

Does the SQL standard have anything to say about assigning identifiers
both to the entire VALUES() statement and to its columns when the
VALUES() statement is by itself?

Cheers,
D
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
phone: +1 415 235 3778 AIM: dfetter666
Skype: davidfetter

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