SAP – SQL – Users without a role

– usuarios que no tienen un rol
select BNAME
  from p01.USR01
 where MANDT = ’300′
   and BNAME not in (
       select UNAME
         from p01.AGR_USERS
        where MANDT = ’300′
          and AGR_NAME = ‘ZCD_EXTRAS_COMUNES’)
 order by 1