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我试图获得客户所做的所有销售总和,问题在于UDF正在返回销售清单。销售退货清单总和而不是总数
我已经尝试更改代码轮,但我只是无法让销售项目返回值的总和。
任何人都可以帮忙。
---UDF--------------
ALTER FUNCTION [dbo].[UDF_CalculateCostOfAllSalesItemsSold]
(
-- Add the parameters for the function here
@ProductID nvarchar(50),
@Cust nvarchar(50)
)
RETURNS Decimal(18,2)
AS
BEGIN
-- Declare the return variable here
DECLARE @CheapestPrice Decimal(18,2)
SELECT @CheapestPrice = (Select MIN(s.price) from dbo.Suppliers s where s.SalesItem = @ProductID)
DECLARE @Price AS DECIMAL(18,2)
-- Add the T-SQL statements to compute the return value here
select @Price = (SELECT Sum(@CheapestPrice*i.Qty) AS MinPrice
FROM dbo.Customers AS c INNER JOIN
dbo.Sales AS o ON c.CustomerName = o.Cust INNER JOIN
dbo.SalesItemsPurchased AS i ON i.OrderNo = o.OrderNo INNER JOIN
dbo.Suppliers AS s ON i.SalesItem = s.SalesItem
WHERE i.SalesItem = @ProductID AND o.Cust = @Cust)
-- Return the result of the function
RETURN @Price
END
-----Query------------
SELECT c.CustomerName AS 'CustomerName', c.CustomerAddress AS 'CustomerAddress',SUM(dbo.UDF_CalculateCostOfAllSalesItemsSold(s.SalesItem, c.CustomerName)) AS 'New Balance'
FROM CUSTOMERS c
left JOIN Sales o
ON c.CustomerName = o.cust
LEFT JOIN SalesItemsPurchased i
on i.OrderNo = o.OrderNo
LEFT JOIN Suppliers s
on i.SalesItem = s.SalesItem
group by c.CustomerName, c.CustomerAddress,s.SalesItem
---Results returned
Cust1 17.45
Cust1 17.45
Cust1 3.00
Cust1 0.69
Cust1 61.44
Cust2 NULL
Cust3 30.54
Cust3 30.54
Cust3 10.47
Cust3 10.47
Cust3 122.88
什么我之后说的cust3 = Cust3 163.89
您是否期待每个客户有单行? – Shaneis
嗨Shaneis是的,但我无法解决如何去做 –