Scara Maccai <m_lists@yahoo.it> writes:
> I got that there should be no difference... plus, I don't get any
> errors,
You should have. The system enforces (or tries to) that a view can't be
part of an inheritance hierarchy, but you seem to have managed to find a
sequence of operations that avoids those checks. Turning a table into a
view with a manual CREATE RULE operation has always been a kluge, and
it's missing a check that the table isn't part of an inheritance tree.
regards, tom lane