#插入记录（二）
插入记录（二）
http://www.nowcoder.com/practice/9681abf28745468c8adacb3b029a18ce
注意第一列是自增长列，在插入记录的时候不需要我们再次插入值
insert into exam_record_before_2021
select null,uid,exam_id,start_time,submit_time,score
from exam_record
where submit_time <'2021-01-01 00:00:00'
select null,uid,exam_id,start_time,submit_time,score
from exam_record
where submit_time <'2021-01-01 00:00:00'
