At 16:31 15.6.2003, Shridhar Daithankar wrote:
>Question. The field approved seems to have boolean values. If probability of
>having either of value is 50%, I doubt planner will use index anyway.
True. It has Y or N only so index on approved is useless. But using index
on ORDER BY part would help a lot since it knows to fetch last X ordered
values.
>Correct me if I am wrong.
Unfortunately you are very right.
I am not sure how to stuff modifystamp and thread into WHERE clause to make
it use indexes on thread and/or modifystamp. So far I believe this would be
the only way to use them, right?
Tomaz