ok. thanks, when my project will move to 8.4, I `ll re-do this test.



________________________________
From: Tom Lane <t...@sss.pgh.pa.us>
To: Kevin Grittner <kevin.gritt...@wicourts.gov>
Cc: Robert Haas <robertmh...@gmail.com>; assaf lehr <assaf_l...@yahoo.com>; 
pgsql-bugs@postgresql.org
Sent: Thu, November 5, 2009 5:21:28 PM
Subject: Re: [BUGS] BUG #5165: Poor performance with Left-join where right side 
does not exist 

"Kevin Grittner" <kevin.gritt...@wicourts.gov> writes:
> assaf lehr <assaf_l...@yahoo.com> wrote:
>> let me explain it better.
>> [hand-waving and pseudo-code]

> People would like to help you, but you're not providing enough
> information to let them.

Well, the really important point is that this query is using a
construction that was specifically improved in 8.4.  The advice
is still going to be the same: see if it isn't better with 8.4.

            regards, tom lane



      

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