Hi,
Try this
SELECT T0.[DocNum], T0.[ItemCode], T0.[PlannedQty], T0.[Status], T0.[PostDate],SUM(T2.PlannedQty),T0.[U_WtCoil], T0.[U_Wastage],T2.U_QTY,
(T0.[U_WtCoil]-T2.U_QTY)
FROM OWOR T0 inneR JOIN WOR1 T2 ON T0.DocEntry=T2.DOCENTRY
GROUP BY T0.[DocNum], T0.[ItemCode], T0.[PlannedQty], T0.[Status], T0.[PostDate],T0.[U_WtCoil], T0.[U_Wastage],T2.U_QTY,
Regards,
Manish