Hi,
Try:
SELECT T1.[CardCode], T1.[CardName], T0.[OpenQty],T0.[Price] as '$ Value' FROM RDR1 T0 INNER JOIN ORDR T1 ON T0.DocEntry = T1.DocEntry INNER JOIN OSLP T2 ON T0.SlpCode = T2.SlpCode WHERE (T0.[PickStatus] = 'R') AND (T0.[OpenQty] > '0') and T2.[SlpName] = [%0] GROUP BY T1.[CardCode], T1.[CardName], T0.[OpenQty],T0.[Price]
Thanks & Regards,
Nagarajan