题解 | #输出提交次数大于2次的用户ID且倒序排列#
输出提交次数大于2次的用户ID且倒序排列
https://www.nowcoder.com/practice/e8601af30fc04e08aa87c64fffcff241
SELECT user_id FROM ( SELECT user_id, COUNT(question_id) AS sub_num FROM done_questions_record GROUP BY user_id HAVING sub_num >2 ORDER BY user_id DESC ) AS t1 -- Mysql要求必须起别名