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WITH yourTable AS ( SELECT '2021-06-01 12:00:00.000' AS timestamp, 'A' AS event UNION ALL SELECT '2021-06-01 12:00:00.200', 'B' UNION ALL SELECT '2021-06-01 12:00:00.500', 'C' UNION ALL SELECT '2021-06-01 12:00:01.700', 'A' UNION ALL SELECT '2021-06-01 12:00:02.000', 'D' UNION ALL SELECT '2021-06-01 12:00:03.000', 'B' ) SELECT timestamp, event FROM yourTable t1 WHERE event = 'A' AND NOT EXISTS ( SELECT 1 FROM yourTable t2 WHERE ABS(DATEDIFF(ms, t2.timestamp, t1.timestamp)) <= 1000 AND t2.event IN ('B', 'C') );
timestamp
event
2021-06-01 12:00:01.700
A