题解 | #分组计算练习题#
分组计算练习题
https://www.nowcoder.com/practice/009d8067d2df47fea429afe2e7b9de45
SELECT gender, university,COUNT(gender) AS user_num, ROUND(AVG(active_days_within_30),1) AS avg_active_day,ROUND(AVG(question_cnt),1) AS avg_question_cnt FROM user_profile GROUP BY gender,university
