Nathan Jahnke <njahnke@gmail.com> writes:
> So the role "sample" owns the database "sample" and has default
> privileges on the table "users" in that database. From the manual:
> "There is no need to grant privileges to the owner of an object
> (usually the user that created it), as the owner has all privileges by
> default."
Owning the database has little or nothing to do with owning the objects
within it. You have not shown us who owns the table users, but I bet
it's not "sample".
regards, tom lane