From: Tom Lane <tgl@sss.pgh.pa.us>
To: Shaun Thomas <sthomas@leapfrogonline.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Confirmation of bad query plan generated by 7.4 tree
Date: Tue, 13 Jun 2006 17:07:24 -0400
Message-ID: <10557.1150232844@sss.pgh.pa.us> (raw)
In-Reply-To: <448EDFC4.8F27.00A9.0@leapfrogonline.com>
References: <448EB053.8F27.00A9.0@leapfrogonline.com>
<448EB053.8F27.00A9.0@leapfrogonline.com>
<9119.1150222168@sss.pgh.pa.us>
<448EDFC4.8F27.00A9.0@leapfrogonline.com>
"Shaun Thomas" <sthomas@leapfrogonline.com> writes:
> Simply changing:
> now() - interval '2 days'
> to
> '2006-06-11 15:30:00'
> generated a much more accurate set of estimates.
Yeah, 7.4 won't risk basing estimates on the results of non-immutable
functions. We relaxed that in 8.0 I believe.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, sthomas@leapfrogonline.com
Subject: Re: Confirmation of bad query plan generated by 7.4 tree
In-Reply-To: <10557.1150232844@sss.pgh.pa.us>
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