From: Bruno Wolff III <bruno@wolff.to>
To: teknokrat <teknokrat@yahoo.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: indexing timestamp fields
Date: Thu, 16 Oct 2003 11:56:29 -0500
Message-ID: <20031016165629.GA28009@wolff.to> (raw)
In-Reply-To: <bmkafb$aiu$1@news.hub.org>
References: <bmjqo8$1hve$1@news.hub.org>
<60wub6wjxf.fsf@dev6.int.libertyrms.info>
<bmkafb$aiu$1@news.hub.org>
On Wed, Oct 15, 2003 at 21:25:17 +0100,
teknokrat <teknokrat@yahoo.com> wrote:
>
> I have a lot of queries of the " where timestamp < some date " type and
> was wondering if an index would improve performance. None of the
> timestamps are null and they are always populated
Unless that query returns only a small fraction of the table (which would
be unusual for a before some date restriction) or you order by the date,
an index probably won't help.
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To: pgsql-sql@postgresql.org
Cc: bruno@wolff.to, teknokrat@yahoo.com
Subject: Re: indexing timestamp fields
In-Reply-To: <20031016165629.GA28009@wolff.to>
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