Scara Maccai wrote:
Hi,
from a table with 100,000,000 rows I have to sum some records using a
query like:
select sum(field1) from mytab where
(time = 1 and id = 3)
or
(time = 3 and id = 1)
or
(time = 2 and id = 5)
The "or clauses" can be even 10,000,000...
Which would be the best method to access data? Should I use a procedure
on the server side?
Put the test-values into a temporary table, analyse it and then join
against it. Can't say about indexes without knowing more about your
usage pattern.
--
Richard Huxton
Archonet Ltd
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TIP 6: explain analyze is your friend
