SQL Server查询来计算给定月份名称周数的总数

Question

我需要创建一个报告，我将只传递月份（2月）和年份（2011），并希望sum(total)但输出所需的像这样...我不知道如何计算总weekwise

Week-1......Week-2......Week-3......Week-4....Total 
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Answer 1

工作实例

样品表，只包含2列thedate datetime, amount numeric

select cast(datediff(d, number%1000, getdate()) as datetime) as thedate, number as amount 
into testtable 
from master..spt_values 

查询服用一个月，一年PARAMS

declare @month int, @year int 
select @month = 2, @year = 2011 

select * 
from 
(
select 
    amount, 
    'Week-' + right(dense_rank() over (order by datepart(wk, thedate)),1) week_in_month 
from testtable 
where thedate >= cast(@year*10000+@month*100+1 as char(8)) 
    and thedate < dateadd(m,1,cast(@year*10000+@month*100+1 as char(8))) 
) P 
pivot (sum(amount) for week_in_month in ([Week-1],[Week-2],[Week-3],[Week-4],[Week-5])) V 

注：

• cast(@year*10000+@month*100+1 as char(8))：一个月
• dateadd(m,1,..)的第一天：第一天一个月