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

From: Michael Glaesemann <grzm(at)seespotcode(dot)net>
To: Joe Conway <mail(at)joeconway(dot)com>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Hackers (PostgreSQL)" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Values list-of-targetlists patch for comments (was Re: [PATCHES]
Date: 2006-08-02 06:54:00
Message-ID: 1CD9D95B-E824-4A0D-85BB-279AD06B931C@seespotcode.net
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On Aug 2, 2006, at 12:47 , Joe Conway wrote:

> regression=# create rule r2 as on update to src do insert into log
> values(old.*, 'old'), (new.*, 'new');
> ERROR: VALUES must not contain OLD or NEW references
>

Would it make sense to add a HINT as well, recommending the UNION
construct Tom mentioned earlier?

On Aug 2, 2006, at 11:52 , Tom Lane wrote:

> create rule r2 as on update to src do
> insert into log select old.*, 'old' union all new.*, 'new';
>
> or just use two separate INSERT commands in the rule.
>

Or is the general case too, uh, general for a HINT?

Michael Glaesemann
grzm seespotcode net

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