How to make a sql loop query to check difference between values?

Question

first of all, I\'m not a native english speaker and this is a hard to explain issue. If you have any doubts, please let me know.

We\'re using a GPS vehicle tracking devi

Answer 1

DECLARE @idFrom as int,
        @idTo as int,
        @gpsDateFrom as datetime,
        @gpsDateTo as datetime
DECLARE VehicleCursor CURSOR FAST_FORWARD FOR 
SELECT  vehicle_gps_id, 
        datetimeCol
FROM    yourtable
ORDER BY vehicle_gps_id
OPEN VehicleCursor FETCH NEXT FROM VehicleCursor INTO @idFrom, @gpsDateFrom
    FETCH NEXT FROM VehicleCursor INTO @idTo, @gpsDateTo
    WHILE @@FETCH_STATUS = 0 BEGIN 
        IF DATEDIFF(MI,@gpsDateFrom,@gpsDateTo) >5
        BEGIN
            --Break (your code here)
        END
        SET @idFrom = @idTo
        SET @gpsDateFrom = @gpsDateTo
        FETCH NEXT FROM VehicleCursor INTO @idTo, @gpsDateTo
    END 
CLOSE VehicleCursor 
DEALLOCATE VehicleCursor

Something like this should work for you. It is a cursor that just runs through all your columns comparing datetimes. You can enter in whatever you want to do into the commented section after the if statement.