问题
TSQL MSSQL 2008r2
I'm re-writing the question to try and make it clear what the issue is that I'm trying to explain.
I've got a stored proc that takes 3 parameters. VehicleKey, StartDate and EndDateTime. I'm querying a Data Warehouse db. So the data shouldn't change.
When the proc is called with the same parameters then most of the time the results will be as expected but on some random occasions, with those same parameters, the results differ. I'm querying a Data WH so the data doesn't change.
The problem is with the dynamic derived column "Island".
It's completely random. The proc can be executed 20 times and give the expected results and then the next 2 will give incorrect results.
There can be 1 or more VehicleKey/DriverKey combinations in a given date range.
This is the problem query
SELECT
A.VehicleKey
,A.NodeId
,A.DriverKey
,MIN(A.StartTrip) 'StartTrip'
,MAX(A.EndTrip) 'EndTrip'
,SUM(A.PrivOdo) 'Private'
,SUM(A.BusOdo) 'Business'
,SUM(A.TravOdo) 'Travel'
,SUM(A.PrivOdo + A.BusOdo + A.TravOdo )'Total'
FROM
(
SELECT
Island = ( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey ORDER BY MONTH(StartTrip)) ) - ( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey, T.DriverKey ORDER BY T.StartTrip) )
,NodeId
,VehicleKey
,DriverKey
,StartTrip
,EndTrip
,BusOdo
,PrivOdo
,TravOdo
FROM
#xYTD_BPTotals T
) AS A
GROUP BY
A.Island
,A.VehicleKey
,A.NodeId
,A.DriverKey
ORDER BY
A.VehicleKey
,MIN(A.StartTrip);
I am of the understanding that the ORDER BY should be on the outside of the derived table for it to take effect.
I think I've narrowed it down to the issue presenting itself only when a Vehicle has 2 or more DriverKey combinations.
for example, Parameters VehicleKey 4865, StartDateTime = '2016-01-01', EndDateTime = '2016-10-31'
This is the correct result - including Island column
VehicleKey NodeId DriverKey Island StartTrip EndTrip Private Business Travel Total_
4865 458 0 0 2016-09-06 14:06:08 2016-09-28 17:02:08 54.75 737.83 0 792.58
4865 458 1202 134 2016-09-29 11:10:04 2016-09-30 17:25:51 0 211.32 0 211.32
4865 458 0 27 2016-10-03 07:39:25 2016-10-14 17:00:15 0 579.81 0 579.81
and this is when it's wrong. Parameters VehicleKey 4865, StartDateTime = '2016-01-01', EndDateTime = '2016-10-31'
- including Island column
The first two rows here should be combined.
VehicleKey NodeId DriverKey Island StartTrip EndTrip Private Business Travel Total_
4865 458 0 98 2016-09-06 14:06:08 2016-09-21 09:15:49 0 313.87 0 313.87
4865 458 0 -63 2016-09-21 09:21:10 2016-09-28 17:02:08 54.75 423.96 0 478.71
4865 458 1202 71 2016-09-29 11:10:04 2016-09-30 17:25:51 0 211.32 0 211.32
4865 458 0 27 2016-10-03 07:39:25 2016-10-14 17:00:15 0 579.81 0 579.81
If I show the first few rows from the derived table, I've broken down the "Island" column
SELECT
Island = ( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey ORDER BY MONTH(StartTrip)) ) - ( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey, T.DriverKey ORDER BY T.StartTrip) )
,Island_x =( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey ORDER BY MONTH(StartTrip)) )
,Island_y = ( ROW_NUMBER() OVER (PARTITION BY T.VehicleKey, T.DriverKey ORDER BY T.StartTrip) )
,NodeId
,VehicleKey
,DriverKey
,StartTrip
,EndTrip
,BusOdo
,PrivOdo
,TravOdo
FROM
#xYTD_BPTotals T
The correct result should be
Island Island_x Island_y NodeId VehicleKey DriverKey StartTrip EndTrip BusOdo PrivOdo TravOdo
0 1 1 24901 4865 0 2016-09-06 14:06:08 2016-09-06 14:08:50 0 0 0
0 2 2 24901 4865 0 2016-09-06 15:39:14 2016-09-06 15:40:53 114 0 0
0 3 3 24901 4865 0 2016-09-08 11:06:43 2016-09-08 11:07:23 0 0 0
0 4 4 24901 4865 0 2016-09-08 11:12:03 2016-09-08 11:12:26 20 0 0
0 5 5 24901 4865 0 2016-09-08 11:19:20 2016-09-08 11:19:52 1 0 0
0 6 6 24901 4865 0 2016-09-08 11:26:58 2016-09-08 11:27:56 88 0 0
0 7 7 24901 4865 0 2016-09-08 11:33:40 2016-09-08 11:35:02 1 0 0
0 8 8 24901 4865 0 2016-09-12 09:08:53 2016-09-12 09:10:42 34 0 0
but I sometimes get this with the same input paramaters.
Island Island_x Island_y NodeId VehicleKey DriverKey StartTrip EndTrip BusOdo PrivOdo TravOdo
98 1 1 24901 4865 0 2016-09-06 14:06:08 2016-09-06 14:08:50 0 0 0
98 2 2 24901 4865 0 2016-09-06 15:39:14 2016-09-06 15:40:53 114 0 0
98 3 3 24901 4865 0 2016-09-08 11:06:43 2016-09-08 11:07:23 0 0 0
98 4 4 24901 4865 0 2016-09-08 11:12:03 2016-09-08 11:12:26 20 0 0
98 5 5 24901 4865 0 2016-09-08 11:19:20 2016-09-08 11:19:52 1 0 0
98 6 6 24901 4865 0 2016-09-08 11:26:58 2016-09-08 11:27:56 88 0 0
98 7 7 24901 4865 0 2016-09-08 11:33:40 2016-09-08 11:35:02 1 0 0
98 8 8 24901 4865 0 2016-09-12 09:08:53 2016-09-12 09:10:42 34 0 0
Why is the "Island" calculated column wrong? 1-1 = 0 not 98.
Where am I going wrong?
回答1:
EDIT - @YourData now looks like your raw table
Declare @YourTable table (VehicleKey int,NodeId int,DriverKey int,StartTrip datetime,EndTrip datetime,PrivOdo decimal(10,2),BusOdo decimal(10,2), TravOdo decimal(10,2))
Insert Into @YourTable values
(4865,458,0 ,'2016-09-06 14:06:08','2016-09-21 09:15:49',0 ,313.87,0),
(4865,458,0 ,'2016-09-21 09:21:10','2016-09-28 17:02:08',54.75,423.96,0),
(4865,458,1202,'2016-09-29 11:10:04','2016-09-30 17:25:51',0 ,211.32,0),
(4865,458,0 ,'2016-10-03 07:39:25','2016-10-14 17:00:15',0 ,579.81,0)
Select VehicleKey
,NodeID
,VehicleKey
,DriverKey
,StartTrip = min(StartTrip)
,EndTrip = max(EndTrip)
,Private = sum(PrivOdo)
,Business = sum(BusOdo)
,Travel = sum(TravOdo)
,Total = sum(PrivOdo + BusOdo + TravOdo )
From (
Select Island = ( ROW_NUMBER() OVER (PARTITION BY VehicleKey ORDER BY MONTH(StartTrip)) ) - ( ROW_NUMBER() OVER (PARTITION BY VehicleKey, DriverKey ORDER BY StartTrip) )
,*
From @YourTable
) A
Group By Island,VehicleKey,NodeID,VehicleKey,DriverKey
Order By min(StartTrip)
Returns
FYI - The sub-query produces
来源：https://stackoverflow.com/questions/40361594/tsql-order-by-on-occasion-doesnt-order-correctly