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Message Posted: Wed, 11 Jan 2006 @ 20:47:29 GMT


     
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Subj:   Re: OLAP Function & MAX
 
From:   Ballinger, Carrie

Madhan,

This may not match your situation, but if this is a GROUP BY that happens to be on the table's NUPI (no redistribution required for the aggregation), you'll get the benefit of a single-AMP plan for the query if you use the aggregate function. OLAP functions, even when they only involve the rows of a single NUPI value, will always cause all-AMP plans to be generated. If you were to perform a large numbers of such queries, the aggregate function is likely to provide better scalability and throughput.


Thanks, -Carrie



     
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