 |
 |
Archives of the TeradataForum
Message Posted: Fri, 25 Jun 2004 @ 08:43:07 GMT
| 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
| |
