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Message Posted: Wed, 27 Dec 2006 @ 11:09:20 GMT

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Subj:   How to prevent high skewness between large_tableA join large_tableB
From:   Anomy Anom

<-- Anonymously Posted: Tuesday, December 26, 2006 22:19 -->


I have two large tables A and B, a1and a2 are A's PI column, b1 and b2 are B's columns(not PI).

When I execute the following query, I meet a high skewness on B's columns b1 and b2 redistribution.

     Select *
      from  large_tableA     A
     Inner join large_tableB    B
     On  A.a1 = B.b1
     And A.a2 = B.b2

Could you tell me how to prevent high skewness for this case?

Thanks for your help.

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