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Message Posted: Mon, 17 Mar 2008 @ 23:20:37 GMT


     
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Subj:   Re: Creating a table with a 0 skew factor
 
From:   McLeod, Terry M

HI;

You don't mention the number of rows involved (all the same number, but what number?). The simple example would be if you had 10 amps and only loaed 8 roes -- it would be skewed. Less expected, but still kind of obvious: Load 105 rows (again, to 10 amps) and the fivve amps with an extra row will have 10% mroe than the other 5 amps = skewed again.

I guess the first question to ask is whether the number of rows is a multiple of the number of amps? If so, it would seem that there should be now skewing....


Regards,

Terry M. McLeod
Senior Consultant, Professional Services, Retail West
Teradata a Division of NCR



     
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