SELECT [BelongsToOrderNo]
     ,[OrdersId]
     ,[OrderNo]
     ,[OpNo]
     ,[StartTime]
     ,[EndTime]
     ,[DatasetId]
     ,[DemandDate]
     ,[OpId]
     ,[PartNo]
     ,NextTime
     ,NextOrder
FROM (
SELECT [BelongsToOrderNo]
     ,[OrdersId]
     ,[OrderNo]
     ,[OpNo]
     ,[StartTime]
     ,[EndTime]
     ,[DatasetId]
     ,[DemandDate]
     ,[OpId]
     ,[PartNo]
     ,LEAD(StartTime) OVER (ORDER BY OrderNo) As NextTime
 ,LEAD(OrderNo) OVER (ORDER BY OrderNo) As NextOrder
FROM [AS Ultimate v16.4].[UserData].[Orders]
) AS TabelkaAgi
where DatasetId = '15' and NextTime.Value < EndTime