> Im running a Datawarehouse benchmark (APB-1) on PostgreSql. The objective is to > choose which of the to main db (PostgreSQL, MySQL) is fastest. I've run into a > small problem which I hope could be resolved here. > > I'm trying to speed up this query: > > select count(*) from actvars, prodlevel where > actvars.product_level=prodlevel.code_level and > prodlevel.division_level='OY3S5LAPALL6';
How about EXPLAIN ANALYZE output? > ACTVARS is a fact table of aproximatly 16 million rows, PRODLEVEL has 20700 > rows. Both have btree indices. > The database has been vacuumed and analyze has been executed. The usual postgresql.conf adjustments have also been made?
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