关于使用TIMESTAMPDIFF呢?
SELECt TIMESTAMPDIFF(HOUR, start_time, end_time) as `difference` FROM timeattendance WHERe timeattendance_id = '1484'

关于使用TIMESTAMPDIFF呢?
SELECt TIMESTAMPDIFF(HOUR, start_time, end_time) as `difference` FROM timeattendance WHERe timeattendance_id = '1484'