题解 | #删除记录(二)#
删除记录(二)
https://www.nowcoder.com/practice/964c9f7fffbb4ab18b507cfed4111b4a
DELETE FROM exam_record WHERE `submit_time` IS NULL OR IFNULL(TIMESTAMPDIFF(SECOND,start_time,submit_time),0)<300 ORDER BY `start_time` ASC LIMIT 3
删除记录(二)
https://www.nowcoder.com/practice/964c9f7fffbb4ab18b507cfed4111b4a
DELETE FROM exam_record WHERE `submit_time` IS NULL OR IFNULL(TIMESTAMPDIFF(SECOND,start_time,submit_time),0)<300 ORDER BY `start_time` ASC LIMIT 3
相关推荐