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Message Posted: Fri, 25 Jun 2004 @ 08:43:07 GMT


     
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Subj:   GLOBAL Vs LOCAL Aggregation
 
From:   Kambhoji, Naveen Ram Prasanna

Hi All,

We have a situation where we perform a join on small table(882 ROWS) with a very huge table(130 Million Rows) for doing an aggregation i.e we do a roll up from daily to weekly & monthly values. When I went through the explain only the SUM step is taking > 1 Hour. Currently we using v2r5 with 20 AMPS.Is it possible to achieve performance on summation step. I have all the STATISTICS defined on the table. Suggestions and Inputs are most welcome

Also I would like to know about this GLOBAL & LOCAL Aggregation technique, all-AMP and Cross-AMP Aggregation technique if they exist please do let me know!!


Thanks!!

Prasanna



     
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