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Message Posted: Thu, 27 Mar 2008 @ 22:02:01 GMT


     
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Subj:   Re: COLLECT STATISTICS on Indexed Columns &
 
From:   Anomy Anom

<-- Anonymously Posted: Thu, 27 Mar 2008 15:57 -->

Accurate stats let the optimizer calculate better cost estimates for various alternatives, but won't necessarily result in a different plan. So no, there is no guaranteed performance improvement.

On the other hand, NOT collecting stats on an index may cause Teradata to avoid using it.



     
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