sql 实现横纵转换

不多解释,直接上代码
create database Hill_test;
go
use Hill_test;
go
create table stu_info (
id int primary key identity(1,1),
name varchar(30) not null,
subject varchar(30) not null,
score int not null
)

insert into stu_info values('张三','chinese',77);
insert into stu_info values('张三','math',78);
insert into stu_info values('张三','english',79);
insert into stu_info values('李四','chinese',87);
insert into stu_info values('李四','math',88);
insert into stu_info values('李四','englisg',89);

select * from stu_info;

select name, sum(b.语文)as '语文' ,sum(b.数学) as '数学',sum(b.英语) as '英语' from (
select name ,
    case t.subject  when 'chinese' then t.score else 0 end as '语文',
    case t.subject  when 'math' then t.score else 0 end as '数学',
    case t.subject  when 'english' then t.score else 0 end as '英语'
from stu_info t
) b  group by name


评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值