Mysql查询哪里不存在不起作用

Question

我有一个查询，从另一个表中获取数据。我使用不存在的地方，以便我不会得到重复，但我有一个问题，我可以在我的问题中有重复的日期。我希望有一个条件，如果所有字段都相同。它不会获取数据。但如果它有一个不同的领域得到它。有人可以帮我这个吗？

INSERT INTO attendance(fk_user,date_created,time_in,time_out,total_hours,actual_ot,actual_ut)
SELECT user_dummy.id_user, t2.date_created,t2.time_in,t2.time_out,t2.total_hours,
       CASE WHEN t2.total_hours >= TIME_FORMAT('9:00:00','%H:%i:%s')
            THEN TIME_FORMAT(TIMEDIFF(t2.total_hours,'9:00:00'),'%H:%i:%s')
            ELSE NULL
       END as overtime,
       CASE WHEN t2.total_hours <= TIME_FORMAT('9:00:00','%H:%i:%s')
            THEN TIME_FORMAT(TIMEDIFF('9:00:00',t2.total_hours),'%H:%i:%s')
            ELSE NULL
       END as undertime
FROM (SELECT empno,date_created,time_in,time_out,
             TIME_FORMAT(TIMEDIFF(time_out,time_in), '%H:%i:%s') as total_hours
      FROM (SELECT empno, date_created,
                   MIN(CASE WHEN status = 0 THEN time_created END) time_in,
                   MAX(CASE WHEN status = 1 THEN time_created END) time_out
            FROM biometrics
            GROUP BY empno, date_created
           ) t1
     ) t2
LEFT JOIN user_dummy ON t2.empno=user_dummy.empno
WHERE NOT EXISTS (SELECT fk_user, date_created, time_in, time_out, total_hours, actual_ot, actual_ut
                  FROM attendance
                  WHERE attendance.date_created = t2.date_created)
AND user_dummy.id_user IS NOT NULL