SQLServer中按照任意分鍾（5分鍾、10分鍾）分組統計數據

業務表：PayOrder，包含時間類型字段PO_PayTime，則按照任意分鍾進行分組統計的查詢SQL如下：

select   cast(floor(cast([PO_PayTime] as float)*24*60/xxx分鍾)*xxx分鍾/60/24 as smalldatetime)  as Time,count(0) as [Count]
from [PayOrder]
where Delflag=0 
group by cast(floor(cast([PO_PayTime] as float)*24*60/xxx分鍾)*xxx分鍾/60/24 as smalldatetime)  
order by [Time] desc

比如按照5分鍾維度統計數據：

select   cast(floor(cast([PO_PayTime] as float)*24*60/5)*5/60/24 as smalldatetime)  as Time,count(0) as [Count]
from [PayOrder]
where Delflag=0 
group by cast(floor(cast([PO_PayTime] as float)*24*60/5)*5/60/24 as smalldatetime)  
order by [Time] desc