Oracle学习笔记：一个简单的行转列例子

　　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：

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END 2019-05-21 17:00:57