题解 | 插入记录（一）
insert into
test.exam_record (uid, exam_id, start_time, submit_time, score)
values
(
1001,
9001,
'2021-09-01 22:11:12',
'2021-09-01 23:01:12',
90
),
(1002, 9002, '2021-09-04 07:01:02', null, null)
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