基於小時彙總時間數據

Question

我在MSSQL中有一個表，其中兩列看起來像下面的示例。我想知道在Session Time中所有小時的行數。

Session Time   Duration 
2011-06-09 23:47:07 00:01:51 
2011-06-09 23:54:45 00:12:37 
2011-06-09 23:41:17 00:21:57 
2011-06-09 23:41:54 00:34:35 
2011-06-09 22:47:51 00:01:20 
2011-06-09 22:56:04 00:09:33 
2011-06-09 22:55:40 00:11:08 
2011-06-09 22:47:30 00:05:06 

最後，結果會是這個樣子：

Session Time   Number of Records 
2011-06-09 23:00:00 4 
2011-06-09 22:00:00 4 

Answer 1

-- Test data 
;with YourTable([Session Time]) as 
(
select cast('2011-06-09 23:47:07' as datetime) union all 
select '2011-06-09 23:54:45' union all 
select '2011-06-09 23:41:17' union all 
select '2011-06-09 23:41:54' union all 
select '2011-06-09 22:47:51' union all 
select '2011-06-09 22:56:04' union all 
select '2011-06-09 22:55:40' union all 
select '2011-06-09 22:47:30' 
) 

-- Query 
select dateadd(hh, datediff(hh, 0, [Session Time]), 0) as [Session Time], 
     count(*) as [Number of Records] 
from YourTable 
group by dateadd(hh, datediff(hh, 0, [Session Time]), 0) 

Answer 2

這可能幫助

declare @tbl table  
( 
RangeCount int,  
TimeRange INT 
)  


insert into @tbl (TimeRange) values (0)  
insert into @tbl (TimeRange) values (1)  
insert into @tbl (TimeRange) values (2)  
insert into @tbl (TimeRange) values (3)  
insert into @tbl (TimeRange) values (4)  
insert into @tbl (TimeRange) values (5)  
insert into @tbl (TimeRange) values (6)  
insert into @tbl (TimeRange) values (7)  
insert into @tbl (TimeRange) values (8)  
insert into @tbl (TimeRange) values (9)  
insert into @tbl (TimeRange) values (10)  
insert into @tbl (TimeRange) values (11)  
insert into @tbl (TimeRange) values (12)  
insert into @tbl (TimeRange) values (13)  
insert into @tbl (TimeRange) values (14)  
insert into @tbl (TimeRange) values (15)  
insert into @tbl (TimeRange) values (16)  
insert into @tbl (TimeRange) values (17)  
insert into @tbl (TimeRange) values (18)  
insert into @tbl (TimeRange) values (19)  
insert into @tbl (TimeRange) values (20)  
insert into @tbl (TimeRange) values (21)  
insert into @tbl (TimeRange) values (22)  
insert into @tbl (TimeRange) values (23)  



insert into @tbl ( 
RangeCount,  
TimeRange)  

select count(1), datediff(hh,GETDATE(),SessionTime) 
from tablename (NOLOCK)  

group by datediff(hh,GETDATE(),SessionTime) 

select SUM(ISNULL(RangeCount, 0))as TotalCount,  

CASE TimeRange  
WHEN 0 THEN '00:00 - 01:00'  
WHEN 1 THEN '01:00 - 02:00'  
WHEN 2 THEN '02:00 - 03:00'  
WHEN 3 THEN '03:00 - 04:00'  
WHEN 4 THEN '04:00 - 05:00'  
WHEN 5 THEN '05:00 - 06:00'  
WHEN 6 THEN '06:00 - 07:00'  
WHEN 7 THEN '07:00 - 08:00'  
WHEN 8 THEN '08:00 - 09:00'  
WHEN 9 THEN '09:00 - 10:00'  
WHEN 10 THEN '10:00 - 11:00'  
WHEN 11 THEN '11:00 - 12:00'  
WHEN 12 THEN '12:00 - 13:00'  
WHEN 13 THEN '13:00 - 14:00'  
WHEN 14 THEN '14:00 - 15:00'  
WHEN 15 THEN '15:00 - 16:00'  
WHEN 16 THEN '16:00 - 17:00'  
WHEN 17 THEN '17:00 - 18:00'  
WHEN 18 THEN '18:00 - 19:00'  
WHEN 19 THEN '19:00 - 20:00'  
WHEN 20 THEN '20:00 - 21:00'  
WHEN 21 THEN '21:00 - 22:00'  
WHEN 22 THEN '22:00 - 23:00'  
WHEN 23 THEN '23:00 - 24:00'  
END AS TimeRange  
from @tbl  
group by TimeRange