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To: "Emiliano Leporati" <emiliano.leporati@gmail.com>
cc: pgsql-performance@postgresql.org
Subject: Re: un-understood index performance behaviour 
In-reply-to: <c5f2bc170807010349o6d252e3cwcacb6e9c898235c8@mail.gmail.com> 
References: <c5f2bc170807010349o6d252e3cwcacb6e9c898235c8@mail.gmail.com>
Comments: In-reply-to "Emiliano Leporati" <emiliano.leporati@gmail.com>
	message dated "Tue, 01 Jul 2008 12:49:19 +0200"
Date: Tue, 01 Jul 2008 10:18:20 -0400
Message-ID: <3340.1214921900@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Emiliano Leporati" <emiliano.leporati@gmail.com> writes:
> can anybody explain me why this happens ? and if i should try different
> indexes ?

Showing EXPLAIN ANALYE output would probably make things a lot clearer.

			regards, tom lane