在SQL Server 2008中按季度和月份分組

Question

我知道那裏的SQL大師能夠提供幫助的常見問題。說我有一個表像這樣：

Quarter | Month | Group | Member | Value 
Q1 2011 | Jan | 10  | 343  | 10 
Q1 2011 | Jan | 1  | 3  | 10 
Q1 2011 | Jan | 4  | 6  | 10 
Q1 2011 | Feb | 34  | 33  | 10 
Q1 2011 | Feb | 5  | 6  | 10 
Q1 2011 | Mar | 54  | 33  | 10 
Q2 2011 | Apr | 76  | 33  | 10 
Q2 2011 | May | 98  | 33  | 10 
Q2 2011 | May | 9  | 1  | 10 
... 

我的希望集團，使我得到相加月和宿舍，以便它現在是：

Quarter | Month | Group | Member | Value 
Q1 2011 | Jan | 15  | 352  | 30 
Q1 2011 | Feb | 39  | 39  | 20 
... 

幫助！

Answer 1

的直接使用GROUP BY子句會爲你工作：

SELECT [Quarter], [Month], SUM([Group]) as [Group], SUM([Member]) as Member, 
    SUM([Value]) as [Value] 
FROM dbo.YourTableName 
GROUP BY [Quarter], [Month]