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To: "Chris Hoover" <revoohc@gmail.com>
cc: "PGSQL Performance" <pgsql-performance@postgresql.org>
Subject: Re: Which index methodology is better?- 
In-reply-to: <1d219a6f0711051043x569b7f51r4cee3353e6ea9f10@mail.gmail.com> 
References: <1d219a6f0711051043x569b7f51r4cee3353e6ea9f10@mail.gmail.com>
Comments: In-reply-to "Chris Hoover" <revoohc@gmail.com>
	message dated "Mon, 05 Nov 2007 13:43:07 -0500"
Date: Mon, 05 Nov 2007 14:56:29 -0500
Message-ID: <26761.1194292589@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Chris Hoover" <revoohc@gmail.com> writes:
> Is it better to create 3 indexes, or one index on the three columns?

This is covered in considerable detail in the fine manual:

http://www.postgresql.org/docs/8.2/static/indexes.html

See particularly sections 11.3 and 11.4

			regards, tom lane