unpivot列轉行函數的使用

create table AA
(
  al         VARCHAR2(100),
  ssl        VARCHAR2(100),
  qlj        VARCHAR2(100),
  ssr        VARCHAR2(100),
  as_of_date DATE
)
create or replace VIEW aa_v  as
select 
     as_of_date,
     al,
     title,
     amt
from aa t
unpivot(amt for title IN(
            SSL,
            QLJ,
            SSR))
select * from AA

select * from AA_V t