Question

我希望我做对了，第一次发布。以下查询提供了随时间推移单个车辆的开/关路状态

SELECT
   VASH1.RecordID,
   VASH1.VehicleAssetID,
   VASH1.UpdateStatusID,
   VASH1.UpdateStatusDate
FROM 
   dbo.VehicleAssetsStatusHistory VASH1
WHERE
   VASH1.VehicleAssetID = '45793'
ORDER BY
   VASH1.UpdateStatusDate`

返回以下数据集：

Record  Vehicle Update          Update
ID       Asset   Status          Status
         ID      ID              Date
8720     45793    2              2016-12-21 12:31:51.893
16087    45793    2              2019-02-05 10:57:00.000
16711    45793    2              2019-03-27 14:15:00.000
16717    45793    2              2019-03-28 07:45:00.000
16956    45793    2              2019-04-10 20:00:00.000
17124    45793    2              2019-04-18 11:53:00.000
19592    45793    3              2019-06-06 08:58:00.000
19651    45793    3              2019-06-07 12:00:00.000
21030    45793    2              2019-06-12 15:00:00.000
20702    45793    3              2019-06-28 14:12:00.000
31711    45793    3              2019-07-18 08:27:00.000
43226    45793    2              2019-08-19 07:31:00.000
43274    45793    3              2019-08-19 14:30:00.000
43434    45793    2              2019-08-19 15:00:00.000
43349    45793    3              2019-08-21 09:00:00.000
43500    45793    3              2019-08-27 06:30:00.000
43526    45793    2              2019-08-27 10:00:00.000
43718    45793    2              2019-08-30 14:32:00.000
44214    45793    3              2019-09-11 11:30:00.000
44229    45793    2              2019-09-11 13:23:00.000
44854    45793    3              2019-09-24 12:30:00.000
44942    45793    2              2019-09-25 21:00:00.000
44988    45793    3              2019-09-27 07:00:00.000
45020    45793    2              2019-09-27 13:50:00.000
45496    45793    3              2019-10-08 12:00:00.000
45509    45793    2              2019-10-08 14:04:00.000

更新状态ID 2 =上路，更新状态ID 3 =上路。我想计算并返回此车辆不在道路上和在道路上的总时间（以分钟为单位）（每个值都应为单个值，最好使用单独的查询，因为它是较大查询的一部分）。

我最接近的是以下内容，其中我设法以分钟为单位计算了“行驶中”时间的运行总计。我的下一步是将其汇总为总数，但失败了，因为我无法在select和sub-selects中汇总。然后，我希望找出越野的总时间：

    SELECT
       VASH1.RecordID,
       VASH1.VehicleAssetID,
       VASH1.UpdateStatusID,
       VASH1.UpdateStatusDate,
       CASE 
              --If last UpdateStatusDate (previous to this one) has an UpdateStatusID of 2 then it calculates the time between that last UpdateStatusDate and this one
              WHEN (SELECT UpdateStatusID FROM Key2Live.dbo.VehicleAssetsStatusHistory VASH2 WHERE VASH2.VehicleAssetID=VASH1.VehicleAssetID AND VASH2.UpdateStatusDate =
                           (SELECT MAX(VASH3.UpdateStatusDate) FROM Key2Live.dbo.VehicleAssetsStatusHistory VASH3 WHERE VASH3.VehicleAssetID=VASH1.VehicleAssetID AND VASH3.UpdateStatusDate<VASH1.UpdateStatusDate))=2
                     THEN DATEDIFF(MINUTE, (SELECT MAX(VASH3.UpdateStatusDate) FROM Key2Live.dbo.VehicleAssetsStatusHistory VASH3 WHERE VASH3.VehicleAssetID=VASH1.VehicleAssetID AND VASH3.UpdateStatusDate<VASH1.UpdateStatusDate), VASH1.UpdateStatusDate) 
              ELSE 0
       END AS 'MinutesOpen'
FROM 
       Key2Live.dbo.VehicleAssetsStatusHistory VASH1
WHERE
       VASH1.VehicleAssetID = '45793'
ORDER BY
       VASH1.UpdateStatusDate

Record Vehicle Update  Update  Minutes
        Asset   Status  Status 
ID      ID      ID      Date    Open
8720    45793   2   31:51.9 0
16087   45793   2   57:00.0 1117346
16711   45793   2   15:00.0 72198
16717   45793   2   45:00.0 1050
16956   45793   2   00:00.0 19455
17124   45793   2   53:00.0 11033
19592   45793   3   58:00.0 70385
19651   45793   3   00:00.0 0
21030   45793   2   00:00.0 0
20702   45793   3   12:00.0 22992
31711   45793   3   27:00.0 0
43226   45793   2   31:00.0 0
43274   45793   3   30:00.0 419
43434   45793   2   00:00.0 0
43349   45793   3   00:00.0 2520
43500   45793   3   30:00.0 0
43526   45793   2   00:00.0 0
43718   45793   2   32:00.0 4592
44214   45793   3   30:00.0 17098
44229   45793   2   23:00.0 0
44854   45793   3   30:00.0 18667
44942   45793   2   00:00.0 0
44988   45793   3   00:00.0 2040
45020   45793   2   50:00.0 0
45496   45793   3   00:00.0 15730
45509   45793   2   04:00.0 0

我是否完全不了解如何以最简单的方式解决此问题？

感谢提供的任何/所有帮助

Answer 1

对于有兴趣的人，我找到的解决方案是：

WITH OffRoadDuration as 
(      
    SELECT
        VASH1.VehicleAssetID,
        VASH1.UpdateStatusID,
        DATEDIFF(MINUTE,VASH1.UpdateStatusDate, ISNULL(OA_VASH2.UpdateStatusDate,GETDATE()) ) AS OffRoadMinutes
    FROM Key2Live.dbo.VehicleAssetsStatusHistory VASH1
        OUTER APPLY 
            (SELECT TOP 1 * FROM Key2Live.dbo.VehicleAssetsStatusHistory VASH2
            WHERE VASH2.VehicleAssetID = VASH1.VehicleAssetID AND VASH2.UpdateStatusDate > VASH1.UpdateStatusDate
            ORDER BY VASH2.UpdateStatusDate ASC) AS OA_VASH2
    WHERE
        VASH1.VehicleAssetID='45793' 
)
SELECT 
    ORD.VehicleAssetID,
    ORD.UpdateStatusID,
    SUM(ORD.OffRoadMinutes) AS [OffRoadMinutes],
    ROUND(CONVERT(FLOAT,SUM(ORD.OffRoadMinutes))/1440,1) AS [OffRoadDays]
FROM
    OffRoadDuration ORD
GROUP BY 
    ORD.VehicleAssetID, ORD.UpdateStatusID

感谢所有帮助，非常感谢

Answer 2

您要使用lead（）分组

  Select vehicle, sum(case when 

         updateStatusId=2
    then StatusWiseTimeDiff else 
    - StatusWiseTimeDiff end) from(
    Select vehicle, UpdateStatusID, 
     Sum(Case when lead(statusid) over 
        (partition by 
     vehicle order by updatestatusdate 
     asc)<>statusid  
     Then

    Date_Diff( Max(UpdateStatusDate), 
    Min(UpdateStatusDate))) as 
     StatusWiseTimeDiff from table 

      End from table
  group by vehicle, 
  )

SQL计算车辆开/关的总时间

2 个答案: