Will Index-only-scan be in 9.2
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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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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