digoal(at)126(dot)com writes:
> schema r1's owenr is r1.
> i create two table in schema r1, these table's owner is r2 and postgres. but
> schema r1's owner r1 can drop r2 and postgres's table in schema r1.
This is the intended and documented behavior. It's no different than
if a database owner chooses to drop a database.
regards, tom lane