insert into

exam_record(uid,exam_id,start_time,submit_time,score) values

(1001,9001,"2021-09-04 22:11:12","2021-09-04 23:01:12",90),

(1002,9002,"2021-09-04 07:01:02",null,null)

inset into 表名(列名) values（值） 个人感觉这个在线测试并不是很好，因为稍微有点不一样就报错