我們如何通過查詢選擇sum（）/ group中的多個列？

Question

我有一個要求從Access數據庫中提取產品數量總數，但包括供應商名稱，ID號，說明等等以及數量總和。

我有這樣的查詢：

SELECT [Vendor Name], SUM([Quantity]) AS Total 
FROM [SalesDB] 
WHERE [Vendor No] IN (1,2,3,4,5,6,7,8) AND [Item Description] = 'bolts' 
Group By [Vendor Name] 

偉大的作品...除了我需要拉查詢更多的列，這樣的事情：

SELECT [Vendor Name], [Vendor No], [Item No], [Item Description], [Item Cost], [Quantity], SUM([Quantity]) AS Total 
FROM [SalesDB] 
WHERE [Vendor No] IN (1,2,3,4,5,6,7,8) AND [Item Description] = 'bolts' 
Group By [Vendor Name] 

不工作，拋出一個集合錯誤

因此，而不是做一些像這樣：

SELECT [Vendor Name], [Vendor No], [Item No], [Item Description], [Item Cost], [Quantity], SUM([Quantity]) AS Total 
FROM [SalesDB] 
WHERE [Vendor No] IN (1,2,3,4,5,6,7,8) AND [Item Description] = 'bolts' 
Group By [Vendor Name], [Vendor No], [Item No], [Item Description], [Item Cost], [Quantity] 

正在運行但更改結果太多。什麼是處理這個查詢的適當方式？

Answer 1

試試這個：

你必須讓你的第一個查詢作爲派生表，並與實際表連接以獲取所有領域

SELECT A.[Vendor Name], [Vendor No], [Item No], [Item Description], 
[Item Cost], [Quantity],B.Total 
from [SalesDB] A 
inner join 
    (SELECT [Vendor Name], SUM([Quantity]) AS Total 
    FROM [SalesDB] 
    WHERE [Vendor No] IN (1,2,3,4,5,6,7,8) 
    AND [Item Description] = 'bolts' 
    Group By [Vendor Name])B 
    on A.[Vendor Name]=B.[Vendor Name] 

Answer 2

只是一個想法

SELECT 
     [ItemID], 
     SUM(ItemQty) as 'QTY', 
     [ItemName] as 'ItemName', 
     itemPrice as 'itemPrice', 
     SUM(ItemTotalPrice) as 'Total' 
    FROM 
     [OrderDetails] 
     inner join Orders 
     on [OrderDetails].OrderID=Orders.OrderID 
     where Orders.TableID != 4 
    GROUP BY ItemID, [ItemName],itemPrice order by ItemID