运行总sql SAP B1 - 找不到合适的方法来解决它

Question

我尝试通过运行以下SQL代码在表底部运行总行。

SELECT
T1.[ItemCode],T4.[ItmsGrpNam],
CASE
WHEN T3.[OnHand] - SUM(T1.[OpenQty]) < SUM(T1.[OpenQty])
THEN T3.[OnHand] - SUM(T1.[OpenQty])
ELSE
SUM(T1.[OpenQty])
END As 'Missing Quantity'

FROM ORDR T0
INNER JOIN RDR1 T1 ON T0.DocEntry = T1.DocEntry
INNER JOIN OITM T2 ON T1.ItemCode = T2.ItemCode
INNER JOIN OITW T3 ON T2.ItemCode = T3.ItemCode
INNER JOIN OITB T4 ON  T2.ItmsGrpCod=T4.ItmsGrpCod

WHERE 
 T3.[WhsCode] = T1.[WhsCode]
and  T0.[DocDueDate] <=  '[%D1]'
and (T4.[ItmsGrpNam] = 'Commercial' Or T4.[ItmsGrpNam] = 'Residentiel')


GROUP BY T1.[ItemCode],T3.[OnHand],T4.[ItmsGrpNam]

HAVING T3.[OnHand] - SUM(T1.[OpenQty]) < 0 Or SUM(T1.[OpenQty]) < 0

UNION ALL

SELECT 'See', 'Total Missing Quantity' ,  CASE
WHEN T3.[OnHand] - SUM(T1.[OpenQty]) < SUM(T1.[OpenQty])
THEN T3.[OnHand] - SUM(T1.[OpenQty])
ELSE
SUM(T1.[OpenQty])
END

FROM ORDR T0
INNER JOIN RDR1 T1 ON T0.DocEntry = T1.DocEntry
INNER JOIN OITM T2 ON T1.ItemCode = T2.ItemCode
INNER JOIN OITW T3 ON T2.ItemCode = T3.ItemCode
INNER JOIN OITB T4 ON  T2.ItmsGrpCod=T4.ItmsGrpCod

WHERE 
 T3.[WhsCode] = T1.[WhsCode]
and  T0.[DocDueDate] <=  '[%D1]'
and (T4.[ItmsGrpNam] = 'Commercial' Or T4.[ItmsGrpNam] = 'Residentiel')

我有此错误消息' 1）。 [Microsoft] [SQL Server Native Client 11.0] [SQL Server]“OITW.OnHand”列在选择列表中无效，因为它不包含在聚合函数或BY GROUP子句中。 2）。 [Microsoft] [SQL Server Native Client 11.0] [SQL Server]无法准备语句。 '用户定义值'（CSHS）'

当我尝试

时

GROUP BY T1.[ItemCode],T3.[OnHand],T4.[ItmsGrpNam]

HAVING T3.[OnHand] - SUM(T1.[OpenQty]) < 0 Or SUM(T1.[OpenQty]) < 0

在查询的第二部分中，当我只想要一个总和的行时，我得到多行。

我花了一天时间来解决这个问题，NET上有多个答案，但我不知道我做错了什么。

是否有人可以帮我解决这个问题？提前谢谢。