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';
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