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Re: Weird index or sort behaviour

From: Matthew Wakeling <matthew(at)flymine(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Greg Stark <gsstark(at)mit(dot)edu>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Weird index or sort behaviour
Date: 2009-11-18 11:39:03
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
On Sat, 14 Nov 2009, Tom Lane wrote:
> Matthew Wakeling <matthew(at)flymine(dot)org> writes:
>> [ discussion about applying materialize to a mergejoin's inner indexscan ]
> I have finally gotten round to doing something about this, and applied
> the attached patch to CVS HEAD.  Could you test it on your problem case
> to see what happens?  If it's not convenient to load your data into
> 8.5devel, I believe the patch would work all right in 8.4.x.  (A quick
> check shows that it applies except for one deletion hunk that has a
> conflict due to a comment change; you could easily do that deletion
> manually.)

Um, cool. I'm going to have to look back at the archives to even work out 
what query I was complaining about though. May take a little while to 
test, but I'll get back to you. Thanks,


 The only secure computer is one that's unplugged, locked in a safe,
 and buried 20 feet under the ground in a secret location...and i'm not
 even too sure about that one.                         --Dennis Huges, FBI

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