Question

我需要第二张桌子。

CREATE TABLE #Temp (VisitingCount int, [Time] int, [Date] nvarchar(50) )
DECLARE @DateNow DATETIME,@i int,@Time int, @Date nvarchar(50)
set @DateNow='00:00'  
set @i=1;  
while(@i<48)  
    begin  
        set @DateNow = DATEADD(minute, 30, @DateNow)
        set @Time = (datepart(hour,@DateNow)*60+datepart(minute,@DateNow))/30 
        set @Date = CONVERT(VARCHAR(5),@DateNow, 108)
        insert into #Temp(VisitingCount,[Time],[Date]) values(0,@Time,@Date )
        set @i=@i+1
    end

select * from #Temp
---------------------------------------------------------------------------

select Sum(VisitingCount) as VisitingCount, Date
from (
  select Sum(VisitingCount) as VisitingCount, [Time],Date
    from #Temp group by [Time],Date
  Union All
    select count(page) as VisitingCount, 
    (datepart(hour,Date)*60+datepart(minute,Date))/30 as [Time], CONVERT(VARCHAR(5),Date, 108) as Date
    from scr_SecuristLog
    where Date between '2009-05-12' and '2009-05-13'
    GROUP BY (datepart(hour,Date)*60+datepart(minute,Date))/30,CONVERT(VARCHAR(5),Date, 108)
  ) X
group by Date
order by 2 asc

VCount Date 0 10:00 0 10:30 0 11:00 0 11:30 1 11:36 1 11:53 0 12:00 1 12:04 1 12:07 1 12:11 1 12:16 0 12:30 0 13:00 0 13:30 0 14:00 1 14:13 1 14:17 2 14:23 2 14:24 1 14:25

<小时/>

我需要下表请看：第二张表


VCount  Date

0   10:00

0   10:30

0   11:00

2   11:30

4   12:00

0   12:30

0   13:00

0   13:30

7   14:00

Answer 1

这里有一些示例代码，解释了如何使用CASE语句，您应该能够弄清楚如何在代码中进行更改

--sample data
create table #temp (SomeDate datetime)
insert #temp values ( '2009-05-12 11:13:19.667')
insert #temp values ( '2009-05-12 11:12:19.667')
insert #temp values ( '2009-05-12 11:33:19.667')
insert #temp values ( '2009-05-12 11:43:19.667')
insert #temp values ( '2009-05-12 11:03:19.667')
insert #temp values ( '2009-05-12 11:53:19.667')
insert #temp values ( '2009-05-12 11:53:19.667')
insert #temp values ( '2009-05-12 11:23:19.667')

insert #temp values ( '2009-05-12 12:13:19.667')
insert #temp values ( '2009-05-12 12:12:19.667')
insert #temp values ( '2009-05-12 13:33:19.667')
insert #temp values ( '2009-05-12 13:43:19.667')
insert #temp values ( '2009-05-12 14:03:19.667')
insert #temp values ( '2009-05-12 14:53:19.667')
insert #temp values ( '2009-05-12 15:53:19.667')
insert #temp values ( '2009-05-12 15:23:19.667')



--this is the grouping/count query
select count(*),case when datepart(mi,Somedate) < 30 
then dateadd(hh, datediff(hh, 0, Somedate)+0, 0)
 else dateadd(mi,30,dateadd(hh, datediff(hh, 0, Somedate)+0, 0)) end
from #temp
group by case when datepart(mi,Somedate) < 30 
then dateadd(hh, datediff(hh, 0, Somedate)+0, 0)
 else dateadd(mi,30,dateadd(hh, datediff(hh, 0, Somedate)+0, 0)) end

查看数据的实际情况

select Somedate,case when datepart(mi,Somedate) < 30 
then dateadd(hh, datediff(hh, 0, Somedate)+0, 0)
 else dateadd(mi,30,dateadd(hh, datediff(hh, 0, Somedate)+0, 0)) end
from #temp

输出

vCount  time
4   2009-05-12 11:00:00.000
4   2009-05-12 11:30:00.000
2   2009-05-12 12:00:00.000
2   2009-05-12 13:30:00.000
1   2009-05-12 14:00:00.000
1   2009-05-12 14:30:00.000
1   2009-05-12 15:00:00.000
1   2009-05-12 15:30:00.000

Answer 2

创建第二个表并使用它插入其中

select left(Date,2)+':00' as Date, sum(VCount) as VCount
from Table1
group by left(Date,2)

我该如何评价这张桌子？

2 个答案: