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Message Posted: Fri, 01 Jun 2012 @ 16:49:47 GMT


     
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Subj:   Re: Where NULL values will store while joining
 
From:   Dave Wellman

Hi,

It depends on the join plan.

If the nulls are in a spool file which is duplicated on all amps then the null values will be on every amp.

If the nulls are in a spool file which is redistributed on the column containing null then (as you say) it will typically be on the highest numbered amp.

If the nulls are in a spool file which is not distributed by the column containing null then they could be on any amp.

What are you really trying to find out ?


Cheers,

Dave

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



     
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