ROLLUP只總結了不同的值在SQL Server 2008中

Question

SELECT  
    ISNULL(Customer.Name, ' GRAND') AS CustomerName, 
    ISNULL(Item.ItemName, 'TOTAL') AS ItemName, 
    SUM(Item_Order.PriceAtDate) AS Price 
FROM   
    Item_Order 
INNER JOIN 
    Item ON Item_Order.ItemID = Item.ItemID 
INNER JOIN 
    TheOrder ON Item_Order.OrderID = TheOrder.OrderID 
INNER JOIN 
    Customer ON TheOrder.CustomerID = Customer.CustomerID 
GROUP BY 
    Customer.Name, Item.ItemName, Item_Order.PriceAtDate WITH ROLLUP 
ORDER BY 
    Customer.Name 

結果：

CustomerName ItemName   Price 
------------ ------------------- ------- 
GRAND  TOTAL    1380.46 
Adrian  Hammer    21.88 
Adrian  Hammer    21.88 
Adrian  Soldering Iron  30.54 
Adrian  Soldering Iron  30.54 
Adrian  TOTAL     52.42 
Baker  Valve     21.88 
Baker  Valve     21.88 
Baker  TOTAL     21.88 

正如你可以看到使用匯總給出的總計增加了30.54和21.88這涉及到52.42，但兩個項目是有序的兩倍。所以我需要實際的總數，而不僅僅是爲了不同的值。

有誰知道我做錯了什麼？

Answer 1

我相信，在您做總和的價格列（Item_Order.PriceAtDate）做一組原因造成的問題：

Customer.Name, Item.ItemName, Item_Order.PriceAtDate WITH ROLLUP 

嘗試使用子查詢，而不是

SELECT 
    ISNULL(CustomerName, ' GRAND') AS CustomerName, 
    ISNULL(ItemName, 'TOTAL') AS ItemName, 
    Sum(Price) AS Price 
FROM 
(
SELECT  
    Customer.Name AS CustomerName, 
    Item.ItemName AS ItemName, 
    Item_Order.PriceAtDate AS Price 
FROM   
    Item_Order 
INNER JOIN 
    Item ON Item_Order.ItemID = Item.ItemID 
INNER JOIN 
    TheOrder ON Item_Order.OrderID = TheOrder.OrderID 
INNER JOIN 
    Customer ON TheOrder.CustomerID = Customer.CustomerID 
) as Test 
GROUP BY 
    CustomerName, ItemName WITH ROLLUP 
ORDER BY 
    CustomerName