一个简单的行列转换例子，原始数据。
create table temp_cwh_student
(
name varchar2(20),
subject varchar2(20),
score number(5)
)
select * from temp_cwh_student
-- 行转列
select name as "姓名",
max(case when subject = '语文' then score else 0 end ) as "语文",
max(case when subject = '数学' then score else 0 end ) as "数学",
max(case when subject = '英语' then score else 0 end ) as "英语",
sum(score) as "总分",
avg(score) as "平均分"
from temp_cwh_student
group by name
结果如下：
END 2019-05-21 17:00:57