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;
查看7道真题和解析