Hi,
Indexes are used to find a record faster in a table.
It only seems to work if I am working with one table.
eg)
> create index customer_id_idx on customer(id);
> select * from customer where id=1;
-- This uses the index I create
However, when I start to join 2 or more tables together it doesn't seem
to use it.. WHY???
eg)
> create index customer_id_idx on customer(id);
> select * from customer, purchaseorder where customer.id=purchaseorder.id;
-- This results in a seq scan .. WHY??
Is there a way to make it so that it uses my index
Thanks again.
