> Thanks you but what I want to do is to count without using count(distinct
> col) because it is much slower than count(*).
I think you'll find the schema I posted very fast, since it's running
everything, including distinct, on primary key columns.
Or you can try this:
select count(*) from People
where ID in
( select People_ID from "Movie People" where Capacity_ID =
(select ID from Capacity where Name = 'director')
);
But I expect you'll get the same performance.
You don't want to denormalize and have separate director and writer tables etc.
That will get ugly.
Tom
BareFeetWare
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