"Carlos Atencio" <catencio(at)grupozoom(dot)com> writes:
> I've installed Postgres 7.0.3.
Consider upgrading to something current (7.1.3, or better 7.2 which
should be out Monday).
> None has known how to repair this. In some queries, duplicating some se=
> nteces makes it work. In other queries, it doesn't.
You're not likely to get useful help without showing us the exact
queries, explain results, and underlying table schemas.
regards, tom lane