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