Same setup, different query: test=> explain select max(time) from test where id = '1'; NOTICE: QUERY PLAN:
Aggregate (cost=5084.67..5084.67 rows=1 width=0) -> Index Scan using idx on test (cost=0.00..5081.33 rows=1333 width=0) Since the index is (id, time), why isn't the index being used to retrieve the maximum value? On Thu, Mar 13, 2003 at 03:10:49PM -0600, Taral wrote: > I have a table "test" that looks like this: > > CREATE TABLE test ( > id BIGINT, > time INTEGER > ); > > There is an index: > > CREATE INDEX idx ON test(id, time); > > The table has been loaded with 2M rows, where time ranges sequentially > from 0 to 1999999 and id is random values from 0 to 49999. -- Taral <[EMAIL PROTECTED]> This message is digitally signed. Please PGP encrypt mail to me. "Most parents have better things to do with their time than take care of their children." -- Me
pgp00000.pgp
Description: PGP signature
