From: Philippe Ivaldi <pivaldi@ovya.fr>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Cc: Albe Laurenz <laurenz.albe@wien.gv.at>
Subject: Re: Chaotic query planning ?
Date: Mon, 30 Jan 2017 09:24:11 +0100
Message-ID: <87r33l6jmc.fsf@piprime.fr> (raw)
In-Reply-To: <A737B7A37273E048B164557ADEF4A58B539CE91F@ntex2010i.host.magwien.gv.at>
References: <87ziinru9c.fsf@piprime.fr>
<A737B7A37273E048B164557ADEF4A58B539CE91F@ntex2010i.host.magwien.gv.at>
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Albe Laurenz wrote
> […]
> Experiment with raising join_collapse_limit and from_collapse_limit to 11.
Thank you, this solve the problem.
> Alternatively, optimize the join order by hand and don't tune the parameters.
What is surprising is that there is no apparent/logical optimal strategy.
Best regards,
--
PI
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To: pgsql-performance@postgresql.org
Cc: pivaldi@ovya.fr, laurenz.albe@wien.gv.at
Subject: Re: Chaotic query planning ?
In-Reply-To: <87r33l6jmc.fsf@piprime.fr>
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