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From: Joe Conway <mail@joeconway.com>
To: Anne Rosset <arosset@collab.net>
Cc: Craig James <craig_james@emolecules.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Need to increase performance of a query
Date: Thu, 10 Jun 2010 14:06:24 -0700
Message-ID: <4C1153D0.5060806@joeconway.com> (raw)
In-Reply-To: <4C114958.4080308@collab.net>
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	<4C114958.4080308@collab.net>

On 06/10/2010 01:21 PM, Anne Rosset wrote:
>>   
> I tried that and it didn't make any difference. Same query plan.

A little experimentation suggests this might work:

create index item_rank_project on item_rank(project_id, rank) where
pf_id IS NULL;

Joe

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