OUTER UNION of ME1 and ME2 Tables
ME1 and ME2: OUTER UNION

      IDnum     Jobcode     Salary     Bonus  IDnum     Jobcode     Salary
      --------------------------------------------------------------------
      1400      ME1          29769       587                             .
      1403      ME1          28072       342                             .
      1120      ME1          28619       986                             .
      1120      ME1          28619       986                             .
                                 .         .  1653      ME2          35108
                                 .         .  1782      ME2          35345
                                 .         .  1244      ME2          36925