使用SUM生成報告

Question

我有兩個SQL Server 2005表：MainTable和Orders。

MainTable：

| MainID | Serial | 
------------------- 
| 1  | A00001 | 
| 2  | B00002 | 

訂單：

| OrderID | MainID | Name | Value | 
----------------------------------- 
| 1  | 2  | John | 100 | 
| 2  | 2  | Mike | 200 | 
| 3  | 1  | John | 150 | 
| 4  | 1  | Mike | 350 | 
| 5  | 1  | John | 200 | 
| 6  | 2  | John | 500 | 
| 7  | 1  | Mike | 50 | 

我想是這樣的：

|Serial | Name | Total | 
----------------------- 
| A00001 | John | 350 | 
| A00002 | John | 600 | 
| A00001 | Mike | 400 | 
| A00002 | Mike | 200 | 

Answer 1

SELECT 
    m.serial, 
    o.name, 
    SUM(o.value) 
FROM 
    main m 
    INNER JOIN order o ON m.mainid = o.mainid 
GROUP BY 
    o.name, 
    m.serial 

Answer 2

select serial, name, sum(value) as total 
from maintable m inner join orders o on 
m.mainID = o.mainID 
group by 
serial, name 

Answer 3

SELECT 
M.SERIAL, O.NAME, SUM(VALUE) AS TOTAL 
FROM MAINTABLE M JOIN ORDERS O ON O.MAINID=M.MAINID 
GROUP BY M.SERIAL, O.NAME 

Answer 4

選擇串行，名稱，總

從MainTable米，

（選擇MainID，名稱，SUM（值）從訂單O基團總共由MainID，名稱）O

其中m。 MainID = O.MainID