select D.ITEM_CODE AS CODE
      ,I.ITEM_NAME AS NAME
      ,SUM(D.ORDER_QTY) AS SUM_QTY
 from  ORDERS O
      ,ORDERS_DTL D
         LEFT JOIN ITEM I
        ON D.ITEM_CODE  = I.ITEM_CODE 
where O.ORDER_NO = D.ORDER_NO
  and O.WH_CODE = '100'
group by D.ITEM_CODE,I.ITEM_NAME 
 HAVING SUM_QTY >= 50
order by SUM(ORDER_QTY) desc 
        ,D.ITEM_CODE desc