直接运行sql 看结果
-- mysql 时间计算函数 -- 函数 TIMESTAMPDIFF(unit,datetime_expr1,datetime_expr2) select TIMESTAMPDIFF(DAY, '2022-02-20 23:59:00', '2022-02-22 00:00:00'); select TIMESTAMPDIFF(HOUR, '2022-02-20 23:59:00', '2022-02-22 00:00:00'); select TIMESTAMPDIFF(MINUTE, '2022-02-20 23:59:00', '2022-02-22 00:00:00'); select TIMESTAMPDIFF(SECOND, '2022-02-20 23:59:00', '2022-02-22 00:00:00'); -- 函数 DATEDIFF(expr1,expr2) select DATEDIFF( '2022-02-20 23:59:00', '2022-02-22 00:00:00'); -- 函数 TIMEDIFF(expr1,expr2) select TIMEDIFF( '2022-02-20 23:59:00', '2022-02-22 00:00:00');