INSERT INTO exam_record
VALUES
	(
		1,
		1001,
		9001,
		"2021-09-01 22:11:12",
		"2021-09-01 23:01:12",
		90
	),
	(
		2,
		1002,
		9002,
		"2021-09-04 07:01:02",
		NULL,
		NULL
	)