WITH t1 AS ( SELECT event_time, CASE WHEN HOUR(event_time) IN (7, 8) THEN '早高峰' WHEN HOUR(event_time) BETWEEN 9 AND 16 THEN '工作时间' WHEN HOUR(event_time) IN (17, 18, 19) THEN '晚高峰' ELSE '休息时间' END as period, TIMESTAMPDIFF(SECOND, event_time, end_time) as wait_time, TIMESTAMPDIFF(SECOND, order_time, s...