题解 | 分组过滤练习题
SELECT university, round(avg(question_cnt),3) as avg_question_cnt, round(avg(answer_cnt),3) as avg_answer_cnt FROM user_profile GROUP BY university HAVING avg_question_cnt < 5 or avg_answer_cnt < 20
SELECT university, round(avg(question_cnt),3) as avg_question_cnt, round(avg(answer_cnt),3) as avg_answer_cnt FROM user_profile GROUP BY university HAVING avg_question_cnt < 5 or avg_answer_cnt < 20
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