题解 | #分组过滤练习题#
分组过滤练习题
https://www.nowcoder.com/practice/ddbcedcd9600403296038ee44a172f2d
SELECT university,
round(AVG(question_cnt),3) as avg_question_cnt,
round(AVG(answer_cnt),3) as avg_answer_cnt
FROM user_profile
GROUP BY university
HAVING AVG(question_cnt)<5 OR AVG(answer_cnt)<20