On Sun, Apr 20, 2008 at 05:43:36AM -0700, mobigital1 wrote:
this should be the same:
table columns:
col1..col16 : smallint null col17..col160: real null
select col1, col2, sum(col17), sum(col18), sum(col19) from thetable group by col1, col2;
should return a total of about 8000 rows, each row would be an aggregation from about 50,000 rows from "thetable".
I repeated this experiment using a script to generate random small numbers etc. The loading took about 12 hours (on my desktop (8GB memory)). The query about 13 minutes. I didn't find any problem. Niels
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-- Niels Nes, Centre for Mathematics and Computer Science (CWI) Kruislaan 413, 1098 SJ Amsterdam, The Netherlands room C0.02, phone ++31 20 592-4098, fax ++31 20 592-4312 url: http://www.cwi.nl/~niels e-mail: Niels.Nes@cwi.nl