Re: un-understood index performance behaviour

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To: "Emiliano Leporati" <emiliano.leporati@xxxxxxxxx>
Subject: Re: un-understood index performance behaviour
From: Tom Lane <tgl@xxxxxxxxxxxxx>
Date: Tue, 01 Jul 2008 10:18:20 -0400
Cc: pgsql-performance@xxxxxxxxxxxxxx
Comments: In-reply-to "Emiliano Leporati" <emiliano.leporati@xxxxxxxxx> message dated "Tue, 01 Jul 2008 12:49:19 +0200"
In-reply-to: <c5f2bc170807010349o6d252e3cwcacb6e9c898235c8@xxxxxxxxxxxxxx>
References: <c5f2bc170807010349o6d252e3cwcacb6e9c898235c8@xxxxxxxxxxxxxx>

"Emiliano Leporati" <emiliano.leporati@xxxxxxxxx> 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

References:
- un-understood index performance behaviour
  - From: Emiliano Leporati

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