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(id) 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 ORDER BY gender, university ASC //按照升序排序
