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Re: Possible planner bug/regression introduced in 8.2.5

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Jakub Ouhrabka <kuba(at)comgate(dot)cz>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: Possible planner bug/regression introduced in 8.2.5
Date: 2007-10-24 13:27:14
Message-ID: 1549.1193232434@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugs
Jakub Ouhrabka <kuba(at)comgate(dot)cz> writes:
> I tried to simplify the query even more and now I have query which on 
> 8.2.4 is planned instantly and on 8.2.5 takes cca 8 seconds.

Are you sure you were using the same planner parameters (particularly
join_collapse_limit and the geqo threshold) in both cases?

			regards, tom lane

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Next:From: Jakub OuhrabkaDate: 2007-10-24 13:46:38
Subject: Re: Possible planner bug/regression introduced in 8.2.5
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Subject: Re: BUG #3692: Conflicting create table statements throw unexpected error

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