题解 | #分组排序练习题#
分组排序练习题
http://www.nowcoder.com/practice/e00bbac732cb4b6bbc62a52b930cb15e
FROM - ON - JOIN - WHERE - GROUP BY - WITH - HAVING - SELECT - DISTINCT - ORDER BY - LIMIT
select university, avg(question_cnt) as avg_question_cnt
from user_profile
group by university
order BY avg_question_cnt
# FROM - ON - JOIN - WHERE - GROUP BY - WITH - HAVING - SELECT - DISTINCT - ORDER BY - LIMIT
所以order by 跟在 group by 后面
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