From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Apparently useless bitmap scans
Date: Wed, 09 May 2007 10:49:08 -0400
Message-ID: <26773.1178722148@sss.pgh.pa.us> (raw)
In-Reply-To: <200705091410.57312.peter_e@gmx.net>
References: <200705091410.57312.peter_e@gmx.net>
Peter Eisentraut <peter_e@gmx.net> writes:
> I'm wondering what it wants to achieve with these three index scans:
See if you still get that with 8.2.4. choose_bitmap_and was fairly far
out in left field before that :-( ... particularly for cases with
partially redundant indexes available.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, peter_e@gmx.net
Subject: Re: Apparently useless bitmap scans
In-Reply-To: <26773.1178722148@sss.pgh.pa.us>
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