Multiple grants: If you revoke a privilege on a sequence, it nullifies any grant of the privilege on that sequence, regardless of who granted it.
Revoking WITH GRANT OPTION: The only way to revoke the WITH GRANT OPTION is to revoke ALL.
Privilege warning: Revoking a specific privilege from a user does not necessarily prevent that user from performing an action that requires that privilege. For example, the user may still have the privilege through PUBLIC or administrative privileges.
Corresponding system authorities: When a sequence privilege is revoked, the corresponding system authorities are revoked. For information on the system authorities that correspond to SQL privileges see GRANT (Sequence Privileges).
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