Allows the user who has been granted a privilege the option of
    granting that privilege to other users.

    The WITH GRANT OPTION clause specifies that the grantees in the
    TO clause may grant the privileges in the privilege list to other
    users for as long as they have the privileges. When the privilege
    is revoked from the grantee who received the privileges with
    the WITH GRANT OPTION clause, the privileges also are revoked
    from all the users who received the privileges from that grantee
    (unless these users have received the privilege from yet another
    user who still has the privilege).