Question

很像原版SO Pivoting rows into columns dynamically in Oracle

但我想做相反的事情

我怎么才能得到

 ID       NAME    AGE    GENDER  STATUS
----     -----   -----  ------  --------
  1      Bob      30     male 
  2      Susan                   married

进入这个

ID       K       V
----     -----   -----
  1      name    Bob
  1      age     30
  1      gender  male
  2      name    Susan
  2      status  married

Answer 1

您正在寻找unpivot。

select * from t 
unpivot (
          v for k in ("NAME","AGE","GENDER","STATUS")
        ) u

如果年龄列是整数，则可能会出现类型不匹配的情况。在这种情况下，在解开之前将其转换为角色。

select *
from (select id,name,to_char(age) age,gender,status from t) t 
unpivot (
         v for k in ("NAME","AGE","GENDER","STATUS")
        ) u

将列拆分为行（oracle）

1 个答案: