oracle带 in out参数的存储过程

/*
查询某个员工的姓名 月薪 职位

*/
create or replace procedure queryEmpInfo(eno in number,
                                         pename out varchar2,
                                         psal   out number,
                                         pjob   out varchar2)
as
begin
  select ename,sal,empjob into pename,psal,pjob from emp where empno=eno;

end;