Jorge Godoy <jgodoy(at)gmail(dot)com> writes:
> I'd like to know if there's any reasoning for not allowing creating an index
> inside the same schema where the table is.
Actually, you've got that exactly backwards: it's not allowed to have
the index in a *different* schema from its parent table. Hence there
is no need for the CREATE INDEX command to accept a schema attached
to the index name --- the only one that counts is the one attached to
the table name.
regards, tom lane