I need a help here - write your code in SQLite 3.8.6
SELECT sensor_id
,event_type
,VALUE
FROM events
JOIN (
SELECT sensor_id
,event_type
,VALUE
,MAX(TIME) AS maxTime
FROM events
GROUP BY
sensor_id
,event_type
)table1
ON events.sensor_id = table1.sensor_id
AND events.Time = t.maxTime
ORDER BY
events.time DESC
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