纵表转横表

建表语句

create table A(
            ID int primary key identity(1,1) ,
            Name varchar(20),
            Course varchar(20),
            Score varchar(20)
        )
        go
        insert into A values('张三','语文','75')
        insert into A values('张三','数学','80')
        insert into A values('张三','英语','90')
        insert into A values('李四','语文','95')
        insert into A values('李四','数学','55')

纵表转横表

select 
        name,
        sum( case when course = '语文' then score else 0 end ) as '语文',
        sum( case when course = '数学' then score else 0 end ) as '数学',
        sum( case when course = '英语' then score else 0 end ) as '英语'
        from A  
        group by name