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
ORDER BY
gender,
university
你只是陷入了短暂的低谷，你也一直有退路