SQL Server：如何根据时间间隔（例如2小时内）按日期时间列进行分组

Question

我想根据时间间隔对数据进行分组，让我们说3小时组。 如何在数据的时间范围内对数据进行分组。

我的数据就像

DocId,    UserCode,     ProcessCode, ProcessDone
 1            1             10       21/11/2015 11:04:00  
 2            1             10       21/11/2015 12:14:00
 3            1             20       21/11/2015 11:04:00
 4            1             20       21/11/2015 11:54:00
 5            1             30       21/11/2015 13:04:00

例如，在上面的数据中，我想在一段时间内使用UserCode进程对数据进行分组，让我们说10-12。

喜欢

UserCode, Process, Total
   1        10       1
   1        20       2

由于此代码总计数基于10-12之间的时间和UserCode和ProcessCode分组UserCode 。

Answer 1

试试这种方式：

select UserCode, ProcessCode, count(1) Total
from tab
where   convert(time,ProcessDone) between '10:00' and '12:00'
group by UserCode, ProcessCode 

Sql小提琴演示

要么

select UserCode, ProcessCode, count(1) Total
from tab
where  DATEPART(hh,ProcessDone) > 10 and DATEPART(hh,ProcessDone) < 12
group by UserCode, ProcessCode 

Sql小提琴演示

或包括date group by

select UserCode, ProcessCode, count(1) Total
from tab
where   convert(time,ProcessDone) between '10:00' and '12:00'
group by UserCode, ProcessCode, convert(date,ProcessDone)

Sql小提琴演示

Answer 2

您应该按解析的日期部分进行分组

select 
    DATEPART(YEAR,ProcessDone), 
    DATEPART(MONTH,ProcessDone), 
    DATEPART(DAY,ProcessDone), 
    DATEPART(HH,ProcessDone), 
    UserCode, 
    ProcessCode, 
    count(1) Total
from tab
group by UserCode, 
    ProcessCode, 
    DATEPART(YEAR,ProcessDone), 
    DATEPART(MONTH,ProcessDone), 
    DATEPART(DAY,ProcessDone), 
    DATEPART(HH,ProcessDone)

然后组合日期部分进行可视化

Answer 3

我用这种方式：

SELECT 
    UserCode, ProcessCode, COUNT(*) As [Total]
FROM 
    yourTable
GROUP BY 
    UserCode, ProcessCode,
    DATEPART(HOUR, ProcessDone) - (DATEPART(HOUR, ProcessDone) + 0) % 2

实际上你可以有两个变量，如：

....
    DATEPART(HOUR, ProcessDone) - (DATEPART(HOUR, ProcessDone) + @start) % @Step

Answer 4

这样的事情应该有效：

select 
    UserCode, 
    ProcessCode, 
    count(*) Total
from tab
group by UserCode, 
    ProcessCode, 
    DATEPART(YEAR,ProcessDone), 
    DATEPART(MONTH,ProcessDone), 
    DATEPART(DAY,ProcessDone), 
    DATEPART(HH,ProcessDone)/3
;

Answer 5

我认为你所寻找的只是一个简单的where子句

SELECT  UserCode,
        ProcessCode AS Process,
        COUNT(*)    AS Total
FROM @yourTable
WHERE DATEPART(HOUR,ProcessDone) BETWEEN 10 AND 12
GROUP BY UserCode,ProcessCode