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Message Posted: Mon, 19 Jan 2004 @ 09:52:43 GMT


     
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Subj:   Re: Explain Plan
 
From:   Narayan Murthy

Duplicate - is creating a replica of the spool(intermediate resultant set of rows) on all the amps(/participating amps).

redistribute - this is done when the a column participating in a where clause is something other than the primary index. In such case that non- primary index column is hashed and that(those) row(s) are hash re-distributed so that they reach an amp which matches with the newly created hash.


Narayan



     
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