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8道真题和解析