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SQL,如何查询成绩连续3次上升的同学?

时间:2021-07-01 10:21:17 帮助过:32人阅读


-- 1.连续3次成绩上升
with t as
(select id,
StudentName,
Score,
row_number() over(partition by StudentName order by id desc) ‘rn‘
from #t)
select distinct a.id,a.StudentName
from t a
inner join t b on a.StudentName=b.StudentName
inner join t c on a.StudentName=c.StudentName
where a.rn=1 and b.rn=2 and c.rn=3
and a.Score>b.Score and b.Score>c.Score

/*
id StudentName
----------- -----------
34 李同学
38 王同学

(2 row(s) affected)
*/


-- 2.连续3次成绩下降
with t as
(select id,
StudentName,
Score,
row_number() over(partition by StudentName order by id desc) ‘rn‘
from #t)
select distinct a.id,a.StudentName
from t a
inner join t b on a.StudentName=b.StudentName
inner join t c on a.StudentName=c.StudentName
where a.rn=1 and b.rn=2 and c.rn=3
and a.Score<b.Score and b.Score<c.Score

/*
id StudentName
----------- -----------
35 赵同学

(1 row(s) affected)
*/

摘自CSDN问答,问答网址:https://bbs.csdn.net/topics/391059033

 

SQL,如何查询成绩连续3次上升的同学?

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