From: teknokrat <teknokrat@yahoo.com>
To: pgsql-sql@postgresql.org
Subject: Re: indexing timestamp fields
Date: Wed, 15 Oct 2003 21:25:17 +0100
Message-ID: <bmkafb$aiu$1@news.hub.org> (raw)
In-Reply-To: <60wub6wjxf.fsf@dev6.int.libertyrms.info>
References: <bmjqo8$1hve$1@news.hub.org>
<60wub6wjxf.fsf@dev6.int.libertyrms.info>
Christopher Browne wrote:
> teknokrat <teknokrat@yahoo.com> writes:
>
>>Is it a good idea to index timestamp fields? what about date fields in
>>general?
>
>
> If you need to order by a timestamp, then it can be worthwhile.
>
> If that timestamp can be null, and is rarely populated, then you might
> get a _big_ benefit from creating a partial index as with:
>
> create index by_some_date on my_table(some_date) where some_date is
> not null;
I have a lot of queries of the " where timestamp < some date " type and
was wondering if an index would improve performance. None of the
timestamps are null and they are always populated
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To: pgsql-sql@postgresql.org
Cc: teknokrat@yahoo.com
Subject: Re: indexing timestamp fields
In-Reply-To: <bmkafb$aiu$1@news.hub.org>
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