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CREATE TABLE IF NOT EXISTS `history` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `login` varchar(64) DEFAULT NULL, `datetime` datetime DEFAULT NULL, `event` tinyint(3) unsigned DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8; INSERT INTO `history` (`id`, `login`, `datetime`, `event`) VALUES (1, 'user1', '2022-03-23 00:00:00', 1), (2, 'user1', '2022-03-23 00:10:00', 2), (3, 'user1', '2022-03-23 00:15:00', 1), (4, 'user2', '2022-03-23 00:20:00', 1), (5, 'user1', '2022-03-23 00:30:00', 2), (6, 'user2', '2022-03-23 00:30:00', 2);
Records: 6 Duplicates: 0 Warnings: 0
WITH cte AS ( SELECT *, LAG(`datetime`) OVER (PARTITION BY login ORDER BY `datetime`) lag_datetime, LAG(event) OVER (PARTITION BY login ORDER BY `datetime`) lag_event FROM history ) SELECT login, SUM(TIMESTAMPDIFF(MINUTE, lag_datetime, `datetime`)) duration FROM cte WHERE (event, lag_event) = (2,1) GROUP BY login
login
duration
user1
25
user2
10