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
"SQL" AS tag,
"hard" as difficulty,
format((sum(a.score) - max(a.score) - min(a.score)) / ((count(1)) - 2),1)
as clip_avg_score
from
exam_record a
join examination_info b on a.exam_id = b.exam_id
and b.difficulty = "hard"
and a.submit_time is not null and b.tag = "SQL"
33%.......什么情况
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