From: Christopher Browne <cbbrowne@libertyrms.info>
To: pgsql-sql@postgresql.org
Subject: Re: indexing timestamp fields
Date: Wed, 15 Oct 2003 12:21:48 -0400
Message-ID: <60wub6wjxf.fsf@dev6.int.libertyrms.info> (raw)
References: <bmjqo8$1hve$1@news.hub.org>
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;
--
"cbbrowne","@","libertyrms.info"
<http://dev6.int.libertyrms.com/;
Christopher Browne
(416) 646 3304 x124 (land)
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To: pgsql-sql@postgresql.org
Cc: cbbrowne@libertyrms.info
Subject: Re: indexing timestamp fields
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