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Re: WITH RECUSIVE patches 0723

From: David Fetter <david(at)fetter(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>,Tatsuo Ishii <ishii(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: WITH RECUSIVE patches 0723
Date: 2008-07-30 04:21:39
Message-ID: 20080730042139.GD6750@fetter.org (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
On Mon, Jul 28, 2008 at 02:49:01PM -0400, Tom Lane wrote:
> Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> writes:
> > "Tom" == Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> >  Tom> That whole business of using the EState to pass tuplestores back
> >  Tom> and forth looks fundamentally broken to me anyway; there's just
> >  Tom> no way it'll be certain to link the right nodes together in
> >  Tom> complicated cases with multiple recursions.
> 
> > Mutual recursion is not allowed;
> 
> Well, the spec allows it, so we're going to have to fix this kluge
> sooner or later, even if it chances not to fail on the subset we
> currently support.

Any ideas how to approach this?

Cheers,
David.
-- 
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david(dot)fetter(at)gmail(dot)com

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