题解 | #SQL类别高难度试卷得分的截断平均值#
SQL类别高难度试卷得分的截断平均值
https://www.nowcoder.com/practice/a690f76a718242fd80757115d305be45
select tag,difficulty, round( (sum(score) - max(score) - min(score)) / (count(score) - 2) ,1) clip_avg_score from examination_info t1 inner join exam_record t2 on t1.exam_id = t2.exam_id where tag = 'SQL' and difficulty = 'hard';