ok. thanks, when my project will move to 8.4, I `ll re-do this test.
________________________________
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: Robert Haas <robertmhaas@gmail.com>; assaf lehr <assaf_lehr@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.Grittner@wicourts.gov> writes:
> assaf lehr <assaf_lehr@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