Re: Optimizer bug in 8.1.0?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alexey Slynko <slynko(at)tronet(dot)ru>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Optimizer bug in 8.1.0?
Date: 2005-11-19 00:48:45
Message-ID: 13592.1132361325@sss.pgh.pa.us
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Alexey Slynko <slynko(at)tronet(dot)ru> writes:
> Any suggestions?

Fix contrib/intarray to have some selectivity estimation procedures
for its operators?

Without any way to estimate the number of rows matching the @@
condition, the optimizer can hardly be expected to guess right...

regards, tom lane

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