SQL 内置函数（pivot） 纵转横

SQL 内置函数（pivot） 纵转横

1.创建表：

create table test(id int,name varchar(20),quarter int,profile int))

insert into test values(1,'a',1,1000);
insert into test values(1,'a',2,1000);
insert into test values(1,'a',3,1000);
insert into test values(1,'a',4,1000);
insert into test values(2,'a',1,1000);
insert into test values(2,'a',2,1000);
insert into test values(2,'a',3,1000);
insert into test values(2,'a',4,1000);

2. Pivot 用法

select id,name,[1] as '1th Season',[2] as '2th Season',[3] as '3th Season',[4] as '4th Season'
from test
pivot
(
sum(profile)
for quarter in ([1],[2],[3],[4])
)as pvt

select * from test

3.Unpivot

select * from test2
select id,name,quarters,profiles
from test2
unpivot
(
profiles
for quarters in ([Q1],[Q2],[Q3],[Q4])
)
as unpvt