Will Index-only-scan be in 9.2

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From: "hans wulf" <lotu1(at)gmx(dot)net>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Will Index-only-scan be in 9.2
Date: 2011-10-12 00:08:18
Message-ID: 20111012000818.140360@gmx.net
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I was wondering if the index-only-scan will be available in 9.2? This is not having to visit the real data to answer a query, if all the information is available in the index. I think this will be a mayor step in overtaking the big O in the g-spot.

There seams to already be some patch for this problem, but I don't know if you are considering this for the next release? Why is the enthusiasm so low on this feature? I would presume this is a mayor performance boost, not having to run through millons of stupid pages if all the info is already in the index.
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From: Devrim GÜNDÜZ <devrim(at)gunduz(dot)org>
To: hans wulf <lotu1(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Will Index-only-scan be in 9.2
Date: 2011-10-14 06:57:13
Message-ID: 1318575440.2086.4.camel@lenovo01-laptop03.gunduz.org
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On Wed, 2011-10-12 at 02:08 +0200, hans wulf wrote:
> I was wondering if the index-only-scan will be available in 9.2? This
> is not having to visit the real data to answer a query, if all the
> information is available in the index. I think this will be a mayor
> step in overtaking the big O in the g-spot.
>
http://rhaas.blogspot.com/2011/10/index-only-scans-weve-got-em.html

Regards,
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Devrim GÜNDÜZ
Principal Systems Engineer @ EnterpriseDB: http://www.enterprisedb.com
PostgreSQL Danışmanı/Consultant, Red Hat Certified Engineer
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