题解 | #分组过滤练习题#
分组过滤练习题
https://www.nowcoder.com/practice/ddbcedcd9600403296038ee44a172f2d
select university, avg(question_cnt) as avg_question_cnt, avg(answer_cnt) as avg_answer_cnt FROM user_profile group by university having avg_question_cnt <5 or avg_answer_cnt <20;