"s d" <s(dot)d(dot)sauron(at)gmail(dot)com> writes:
> I have about 6 tables that inherit from one table. They all have the
> exact same indexes but when i try to query all by a row (which is
> indexed, btree) the QP decides to do sequential scan for some of them
> (the bigger tables) rather than use the index.
Please show the details: the table definitions, exact query, and plan.
regards, tom lane