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
from user_profile
group by university
having avg(question_cnt)<5 or avg(answer_cnt)<20
，最主要留校的导师大概率是职场上招聘失败的，被迫留校的，什么牛鬼蛇神都会有
。
吓得我不敢去外包了，但是目前也只有外包这一个实习，我还要继续去吗