在SQL Server計算最小值，最大值和平均值的時間字符串列表

Insert Into Heartbeat values 
(1 ,'3/20/2017 07:05'), 
(1 ,'3/20/2017 07:15'), 
(1 ,'3/20/2017 07:35'), 
(1 ,'3/20/2017 07:55'), 
(2 ,'3/20/2017 07:11'), 
(2 ,'3/20/2017 07:19'), 
(2 ,'3/20/2017 07:45'), 
(2 ,'3/20/2017 07:58') 

;with cte as (
     Select SensorID 
       ,MinDT  = Min(DatetimeInformation) 
       ,MaxDT  = Max(DatetimeInformation) 
     From @YourTable 
     Group By SensorID 
       ,Convert(date,DatetimeInformation) 
       ,DatePart(HOUR,DatetimeInformation) 
) 
Select SensorID 
     ,Date = Convert(date,MinDT) 
     ,TimeDuration = Format(MinDT,'htt')+ ' - ' + Format(DateAdd(HOUR,1,minDT),'htt') 
     ,DateTimeInformationList = Stuff((Select ', ' +Format(DatetimeInformation,'M/dd/yyyy h:mm') 
             From HeartBeat 
             Where SensorID=A.SensorID 
              and DatetimeInformation between A.MinDT and A.MaxDT 
             Order By DatetimeInformation 
             For XML Path ('') 
             ),1,2,'') 
from cte A

返回在SQL Server計算最小值，最大值和平均值的時間字符串列表

Date   TimeDuration DateTimeInformationList 
1   2017-03-20 7AM - 8AM  3/20/2017 7:05, 3/20/2017 7:15, 3/20/2017 7:35, 3/20/2017 7:55 
2   2017-03-20 7AM - 8AM  3/20/2017 7:11, 3/20/2017 7:19, 3/20/2017 7:45, 3/20/2017 7:58

我能得到幫助，以組每小時Datetimeinformation這是上面的查詢。我需要獲得該TimeTime的所有DatetimeInformationList（上午7點至上午8點）的平均時間間隔（分鐘或秒）

來源

2017-03-22 Marid

當我嘗試插入另一2行與（1， '3/20/2017年08:05'），（1， ''3/20/2017 08:15'），那麼Sensor ID 1應該有2行，一個是7AM到8AM，另一個是上午8AM到9AM，平均值應該是分別從上午7AM到上午8AM以及上午8AM到上午9AM。但是下面的答案是選擇SensorID 1的所有日期並計算平均值。它應該根據時間間隔進行計算。 – Marid

以下是您的CTE修改，看起來可以做你正在尋找的東西。

;with cte as (
    Select h1.SensorID 
     ,MinDT  = Min(h1.DatetimeInformation) 
     ,MaxDT  = Max(h2.DatetimeInformation) 
     ,AvgInterval = Avg(datediff(second, h1.DateTimeInformation, h2.DateTimeInformation)) 
    From #HeartBeat h1 
    INNER JOIN #Heartbeat h2 
     ON h1.SensorID = h2.SensorID 
    WHERE h2.DateTimeInformation = (
     SELECT min(dateTimeInformation) 
     FROM #Heartbeat h3 
     WHERE h3.SensorID = h1.SensorID 
      AND h3.DateTimeInformation > h1.DateTimeInformation 
     ) 
    Group By h1.SensorID 
      ,Convert(date,h1.DatetimeInformation) 
      ,DatePart(HOUR,h1.DatetimeInformation) 
) 
Select A.SensorID 
    ,Date = Convert(date,MinDT) 
    ,TimeDuration = Format(MinDT,'htt')+ ' - ' + Format(DateAdd(HOUR,1,minDT),'htt') 
    ,DateTimeInformationList = Stuff((Select ', ' +Format(DatetimeInformation,'M/dd/yyyy h:mm') 
            From #HeartBeat 
            Where SensorID=A.SensorID 
             and DatetimeInformation between A.MinDT and A.MaxDT 
            Order By DatetimeInformation 
            For XML Path ('') 
           ),1,2,'') 
    ,AverageInterval = Cast(Cast(AvgInterval/60 as int) As varchar(2)) + ':' + Cast(AvgInterval % 60 AS varchar(2))

從CTE甲

輸出：

SensorID Date TimeDuration DateTimeInformationList          AverageInterval 
1  2017-03-20 7AM - 8AM 3/20/2017 7:05, 3/20/2017 7:15, 3/20/2017 7:35, 3/20/2017 7:55 16:40 
2  2017-03-20 7AM - 8AM 3/20/2017 7:11, 3/20/2017 7:19, 3/20/2017 7:45, 3/20/2017 7:58 15:40

來源

2017-03-22 17:20:12

注意：我使用名爲#Heartbeat的#temp表進行測試。 –

當我嘗試在（1，'3/20/2017 08:05'），（1，'3/20/2017 08:15'）插入另外2行時，傳感器ID 1應該有2行，一個上午7點到上午8點，上午8點到上午9點，平均值分別爲上午7點到上午8點，上午8點到上午9點。但是，上面的查詢正在挑選SensorID 1的所有日期並計算平均值。它應該根據時間間隔進行計算。 – Marid

在SQL Server計算最小值，最大值和平均值的時間字符串列表

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