题解 | #分组过滤练习题#

分组过滤练习题

http://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)

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