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 b.tag,b.difficulty, round((sum(a.score)-max(a.score)-min(a.score))/(count(a.score)-2) ,1) as clip_avg_score from exam_record a inner join examination_info b on a.exam_id=b.exam_id where b.tag='SQL' and b.difficulty ='hard' order by a.score;
查看9道真题和解析
