create or replace procedure queryempinform(eno in number,
                                 pename out varchar2,
                                 psal out number,
                                 pjob out varchar2)
as
begin
  --得到该员工的姓名、月薪、职位
  select ename,sal,job into pename,psal,pjob from emp where empno=eno;
end;

select 后面的第三列老师写的是empjob为何不报错 ，emp表的职位不是job而已的吗