From: Josh Berkus <josh@agliodbs.com>
To: Sebastian Böck <sebastianboeck@freenet.de>
Cc: pgsql-performance@postgresql.org
Subject: Re: Index not used on join with inherited tables
Date: Mon, 30 May 2005 09:21:46 -0700
Message-ID: <200505300921.46460.josh@agliodbs.com> (raw)
In-Reply-To: <429B3734.2020609@freenet.de>
References: <429B3734.2020609@freenet.de>
Sebastian,
> I'm having another problem with a query that takes to long, because
> the appropriate index is not used.
PostgreSQL is not currently able to push down join criteria into UNIONed
subselects. It's a TODO.
Also, if you're using inherited tables, it's unnecessary to use UNION; just
select from the parent.
--
Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com, sebastianboeck@freenet.de
Subject: Re: Index not used on join with inherited tables
In-Reply-To: <200505300921.46460.josh@agliodbs.com>
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