按星期組使用SQL Server 2008

Question

我有一個表，我想按列顯示數據。我已經完成了一個星期，但在一個月的所有周裏都做不到。

在我的表我想組由每週ID數據，總結其

我的樣本數據是在這裏：SqlFiddle

樣品O/P

121212 1212 7646 45647 

Answer 1

檢查這

SELECT month 
    ,SUM(CASE WHEN day between 1 and 7 then Value END) as WEEK_1_VAL 
    ,SUM(CASE WHEN day between 8 and 14 then Value END) as WEEK_2_VAL 
    ,SUM(CASE WHEN day between 15 and 21 then Value END) as WEEK_3_VAL 
    ,SUM(CASE WHEN day between 22 and 28 then Value END) as WEEK_4_VAL 
    ,SUM(CASE WHEN day between 29 and 31 then Value END) as WEEK_5_VAL 
FROM sample GROUP BY month 
; 

輸出

month WEEK_1_VAL WEEK_2_VAL WEEK_3_VAL WEEK_4_VAL WEEK_5_VAL 
12  8   13   1   119.78  11.89 

Answer 2

做一個查詢，你按DATEPART(week, ...)，這將產生每週一列，然後轉動該查詢，使行成列。