题解 | #插入记录（二）#
插入记录（二）
https://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 submit_time < '2021-01-01';
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