>
> >I'm wondering if there is some way to force the execution plan to

use the

> >index PERSONAS_PK?
>
> Try this query and compare it with your original - especially if you

are

> using InterBase. If you need more, come back and tell us what database
> server you are using.
>
> ./hb

What would be the advantage of using a plan as opposed to subselects?

I personally use subselects, but some people here use plans and they
are having a problem now with win 2003 server and firebird.