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Message Posted: Thu, 18 Nov 2010 @ 08:22:33 GMT


     
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Subj:   Re: Teradata's Indexing: PPI vs PI
 
From:   DWellman

Hi,

And you're correct, it is not really exactly even distribution, just very close.

With small numbers of rows you can generate uneven distribution even with unique data values. The even (or nearly even) distribution comes with large numbers of rows.


Regards,

Dave

Ward Analytics Ltd: Information in motion ( www.ward-analytics.com )



     
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