Removes a database role.
DROP ROLE [IF EXISTS] <name> [, ...]
DROP ROLE removes the specified role(s). To drop a superuser role, you must be a superuser yourself. To drop non-superuser roles, you must have
A role cannot be removed if it is still referenced in any database; an error will be raised if so. Before dropping the role, you must drop all the objects it owns (or reassign their ownership) and revoke any privileges the role has been granted. The
REASSIGN OWNED and
DROP OWNED commands can be useful for this purpose.
However, it is not necessary to remove role memberships involving the role;
DROP ROLE automatically revokes any memberships of the target role in other roles, and of other roles in the target role. The other roles are not dropped nor otherwise affected.
Remove the roles named
DROP ROLE sally, bob;
The SQL standard defines
DROP ROLE, but it allows only one role to be dropped at a time, and it specifies different privilege requirements than HAWQ uses.