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Posted by Doug on 03/02/06 06:56
try skipping the "between." something like
SELECT ref.*, tran.bigint
from transactiontable tran
INNER JOIN referencetable ref
on tran.bigint >= ref.starting_bigint
and tran.bigint <=ref.ending_bigint
try creating a composite index on ref, containing starting_bigint plus
ending_bigint
if that doesn't work, try zapping your existing indexes on ref.
thinking outside the box, try creating staging tables, or ghost tables.
The ghost tables are for a selected period taht you are currently
working on. You copy pieces of your trans table off to a temp table,
and do your lookups against it. you eat the one copy, you eat the
creation of the indexon the temp table, but you get the benefits of not
having to do complex searches against a 100,000,000 row table. this is
RARELY needed, but I've done it on rare occasion.
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