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4道真题和解析
