select OD.ITEM_CODE CODE,
I.ITEM_NAME NAME,
SUM(OD.ORDER_QTY) SUM_QTY

from ORDERS_DTL OD,
inner join ORDERS O on OD.ORDER_NO = O.ORDER_NO ,
inner join WAREHOUSE W on O.WH_CODE = W.WH_CODE,
left outer join ITEM I on OD.ITEM_CODE = I.ITEM_CODE

where W.WH_NAME = '浦和倉庫'

order by 

group by ITEM_CODE

having SUM(OD.ORDER_QTY) >= 50