按星期组使用SQL Server 2008

Question

我有一个表，我想按列显示数据。我已经完成了一个星期，但在一个月的所有周里都做不到。

在我的表我想组由每周ID数据，总结其

我的样本数据是在这里：SqlFiddle

样品O/P

121212 1212 7646 45647 

Answer 1

检查这

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 
; 

输出

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

做一个查询，你按DATEPART(week, ...)，这将产生每周一列，然后转动该查询，使行成列。