SELECT

 DTL.ITEM_CODE as CODE,
 ITEM_NAME as NAME,
 DTL.SUMQ as SUM_QTY

FROM ORDERS
Inner JOIN (
 SELECT WH_CODE
 FROM WAREHOUSE
 Where WH_NAME = '浦和倉庫'
) WARE
 ON WARE.WH_CODE = ORDERS.WH_CODE
 
Inner JOIN (
 SELECT
  ORDER_NO, 
  ITEM_CODE,
  SUM(ORDER_QTY) as SUMQ
  FROM ORDERS_DTL
  GROUP BY ITEM_CODE
  HAVING SUMQ >= 50
 )DTL
 ON DTL.ORDER_NO  = ORDERS.ORDER_NO 
LEFT JOIN ITEM
 ON DTL.ITEM_CODE = ITEM.ITEM_CODE
 ORDER BY SUM_QTY DESC ,CODE ASC