From: Richard Huxton <dev@archonet.com>
To: A. Kretschmer <andreas.kretschmer@schollglas.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: many 'OR' in WHERE-condition
Date: Fri, 20 Apr 2007 12:03:44 +0100
Message-ID: <46289E10.9060302@archonet.com> (raw)
In-Reply-To: <20070420051341.GA15322@a-kretschmer.de>
References: <20070420051341.GA15322@a-kretschmer.de>
A. Kretschmer wrote:
> in a SELECT with a condition 'WHERE foo IN (1,2,3,4,...)' with a large
...
> But if the list increase the planner choose an seq-scan. The amount of
> values in the list is about 200 and the table has about 250.000 rows.
>
> How can we avoid the seq-scan?
Are you sure you'd want to? What plan have you found to be faster with
200 tests?
--
Richard Huxton
Archonet Ltd
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To: pgsql-sql@postgresql.org
Cc: dev@archonet.com, andreas.kretschmer@schollglas.com
Subject: Re: many 'OR' in WHERE-condition
In-Reply-To: <46289E10.9060302@archonet.com>
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