SQLServer列转行操作及union all用法

luckyext2025-03-22 21:26

1.创建测试表及数据sql如下

create table ScoresTable(

Name varchar(50),

ChineseScore int,

MathScore int

)

insert into ScoresTable values('小张',90,95)

insert into ScoresTable values('小王',98,99)

2.表中查询结果如下

3.现需列转行显示，每行显示姓名，科目，成绩

实现sql如下：

select * from

(

select Name, Subject ='语文',Scores=ChineseScore from ScoresTable

union all

select Name, Subject ='数学',Scores=MathScore from ScoresTable

) t

order by Name ,Subject

运行结果如下，实现了列转行