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) avg_question_cnt, avg(answer_cnt) avg_answer_cnt from user_profile group by university having avg(question_cnt) < 5 or avg(answer_cnt) < 20
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