题解 | #插入记录（二）#
插入记录（二）
https://www.nowcoder.com/practice/9681abf28745468c8adacb3b029a18ce
insert into exam_record_before_2021 select null,uid,exam_id,start_time,submit_time,score from exam_record where submit_time is not null and year(submit_time) < 2021;
