SQL Server 分组统计查询（按月、小时分组）

这篇文章主要为大家详细介绍了SQL Server 分组统计查询（按月、小时分组），具有一定的参考价值，可以用来参考一下。

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设置AccessCount字段可以根据需求在特定的时间范围内如果是相同IP访问就在AccessCount上累加。

代码如下:

Create table Counter 
( 
CounterID int identity(1,1) not null, 
IP varchar(20), 
AccessDateTime datetime, 
AccessCount int 
) 

代码如下:

select 
convert(varchar(7),AccessDateTime,120) as Date, 
sum(AccessCount) as [Count] 
from 
Counter 
group by 
convert(varchar(7),AccessDateTime,120) 

代码如下:

declare @Year int 
set @Year=2009 
select 
m as [Date], 
sum( 
case when datepart(month,AccessDateTime)=m 
then AccessCount else 0 end 
) as [Count] 
from 
Counter c, 
( 
select 1 m 
union all select 2 
union all select 3 
union all select 4 
union all select 5 
union all select 6 
union all select 7 
union all select 8 
union all select 9 
union all select 10 
union all select 11 
union all select 12 
) aa 
where 
@Year=year(AccessDateTime) 
group by 
m 

代码如下:

declare @DateTime datetime 
set @DateTime=getdate() 
select 
right(100+a,2)+ ':00 -> '+right(100+b,2)+ ':00 ' as DateSpan, 
sum( 
case when datepart(hour,AccessDateTime)> =a 
and datepart(hour,AccessDateTime) <b 
then AccessCount else 0 end 
) as [Count] 
from Counter c , 
(select 0 a,1 b 
union all select 1,2 
union all select 2,3 
union all select 3,4 
union all select 4,5 
union all select 5,6 
union all select 6,7 
union all select 7,8 
union all select 8,9 
union all select 9,10 
union all select 10,11 
union all select 11,12 
union all select 12,13 
union all select 13,14 
union all select 14,15 
union all select 15,16 
union all select 16,17 
union all select 17,18 
union all select 18,19 
union all select 19,20 
union all select 20,21 
union all select 21,22 
union all select 22,23 
union all select 23,24 
) aa 
where datediff(day,@DateTime,AccessDateTime)=0 
group by right(100+a,2)+ ':00 -> '+right(100+b,2)+ ':00 ' 

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