select a.SALES_DATE SAL_DATE,
a.SALES_NO NO,
b.ITEM_CODE ITEM_CODE,
b.SALES_QTY SAL_QTY,
b.DELIVERED_QTY DEL_QTY,
case when b.DELIVERED_QTY = 0 then  '未出荷'
     when b.DELIVERED_QTY <> 0 and b.SALES_QTY > b.DELIVERED_QTY  then  '一部出荷'
     when b.SALES_QTY = b.DELIVERED_QTY  then  '出荷済'
     END SHIP_STS
from SALES a
left join SALES_DTL b on a.SALES_NO = b.SALES_NO
order by SAL_DATE DESC, NO,ITEM_CODE