2
如何傳遞數爲參數,並在功能功能的參數並返回一個對象類型
create type my_details as
object(v_ename varchar2(20),v_sal number(10));
create or replace function f_emp(v_empno in number)
return my_details
as
v_det my_details;
begin
select ename,sal
into v_det.v_ename,v_det.v_sal
from emp
where empno=v_empno;
return v_det;
end;
返回一個對象類型當我嘗試調用函數,我得到一個錯誤
declare
v_type my_details;
begin
v_type:=f_emp(7839);
end;
/
錯誤堆棧
declare
*
ERROR at line 1:
ORA-06530: Reference to uninitialized composite
ORA-06512: at "SCOTT.F_EMP", line 6
ORA-06512: at line 4
可以在有人幫我指出我犯了什麼錯誤,我該如何改進?