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Message Posted: Fri, 27 Nov 2010 @ 01:35:07 GMT


     
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Subj:   Re: Sampled statistics in a production environment
 
From:   John_Wight

C Ballinger wrote:

  The limitations of USING SAMPLE, either in T 12 or T13.0, can be somewhat counter-balanaced by increasing the sampling percentage of the collection (20%, 50%, etc.).  


Carrie, who does one 'increase the sampling percentage' for sampling? Excuse my ignorance;-(

When we were on 2.6.2 I could not find out how, but when running sampling on very unique columns, I found that the % would show up different in many cases and assumed that the optimizer or collect stats automatically changed the sampling % - was I right - or just 'mistaken again' ;-)

Again, thanks for your time and input - much appreciated.


JK Wight
EDW - Integration/DBA



     
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