Re: Rewrite, normal execution vs. EXPLAIN ANALYZE

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: David Fetter <david(at)fetter(dot)org>
Cc: Marko Tiikkaja <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Rewrite, normal execution vs. EXPLAIN ANALYZE
Date: 2010-07-23 19:32:52
Message-ID: AANLkTi=nXWxQaeMteVLBu5d6_ujW7asJKhTzeqOV8on2@mail.gmail.com
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On Fri, Jul 23, 2010 at 3:31 PM, David Fetter <david(at)fetter(dot)org> wrote:
> On Fri, Jul 23, 2010 at 03:30:03PM -0400, Robert Haas wrote:
>> On Fri, Jul 23, 2010 at 3:19 PM, Marko Tiikkaja
>> <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi> wrote:
>> > This may be a bit hard to follow, but essentially what happens is
>> > that in EXPLAIN ANALYZE, the INSERT in the rule does not see the
>> > changes made by T2 to baz while in the regular execution scenario
>> > it does.
>>
>> Well that's gotta be a bug, but in what I'm not sure.
>
> I've said it before, and I'll say it again.  User-accessible RULEs are
> themselves a bug :P

Maybe so, but perhaps it would be more productive to concentrate on
solving the immediate problem first.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company

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