订单建议-判断物料是否存在备选物料+仅显示Y/N

• 示例代码

DECLARE @BX numeric(19,6)
SELECT @BX= Ts.[qty]   FROM OALI T0
LEFT JOIN 
(
SELECT T0.[ItemCode], SUM(T0.[OnHand]) AS'qty' FROM OITW T0
GROUP BY T0.[ItemCode]
) Ts ON TS.[ItemCode]=T0.[AltItem]
 WHERE T0.[OrigItem]=$[ORCM.ITEMCODE]

IF @BX IS NOT NULL
select N'Y'

IF @BX IS NULL
SELECT N'N'