Created
February 11, 2020 22:50
-
-
Save kleong/f424bc09e958d8bb670cbf1055aa5424 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Grouping events emitted in last 5 seconds by vehicleId and getting the time of the oldest event in this group */ | |
WITH vehicles_in_last_5_seconds AS ( | |
SELECT | |
vehicleinfo.vehicleId, | |
vehicleinfo._event_time, | |
vehicleinfo.speed | |
from | |
commons.vehicleinfo | |
WHERE | |
vehicleinfo._event_time > CURRENT_TIMESTAMP() - SECONDS(5) | |
), | |
older_sample_time_for_vehicles as ( | |
SELECT | |
MIN(vehicles_in_last_5_seconds._event_time) as min_time, | |
vehicles_in_last_5_seconds.vehicleId | |
FROM | |
vehicles_in_last_5_seconds | |
GROUP BY | |
vehicles_in_last_5_seconds.vehicleId | |
), | |
older_sample_speed_for_vehicles AS ( | |
SELECT | |
vehicles_in_last_5_seconds.speed, | |
vehicles_in_last_5_seconds.vehicleId | |
FROM | |
older_sample_time_for_vehicles, | |
vehicles_in_last_5_seconds | |
where | |
vehicles_in_last_5_seconds._event_time = older_sample_time_for_vehicles.min_time | |
and vehicles_in_last_5_seconds.vehicleId = older_sample_time_for_vehicles.vehicleId | |
), | |
latest_sample_time_for_vehicles as ( | |
SELECT | |
MAX(vehicles_in_last_5_seconds._event_time) as max_time, | |
vehicles_in_last_5_seconds.vehicleId | |
FROM | |
vehicles_in_last_5_seconds | |
GROUP BY | |
vehicles_in_last_5_seconds.vehicleId | |
), | |
latest_sample_speed_for_vehicles AS ( | |
SELECT | |
vehicles_in_last_5_seconds.speed, | |
vehicles_in_last_5_seconds.vehicleId | |
FROM | |
latest_sample_time_for_vehicles, | |
vehicles_in_last_5_seconds | |
where | |
vehicles_in_last_5_seconds._event_time = latest_sample_time_for_vehicles.max_time | |
and vehicles_in_last_5_seconds.vehicleId = latest_sample_time_for_vehicles.vehicleId | |
) | |
SELECT | |
latest_sample_speed_for_vehicles.speed, | |
older_sample_speed_for_vehicles.speed, | |
older_sample_speed_for_vehicles.vehicleId | |
from | |
older_sample_speed_for_vehicles, latest_sample_speed_for_vehicles | |
WHERE | |
older_sample_speed_for_vehicles.vehicleId = latest_sample_speed_for_vehicles.vehicleId | |
AND latest_sample_speed_for_vehicles.speed < older_sample_speed_for_vehicles.speed - 20 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment