如何从 PL/SQL 表中的连接表中获取 Select 列

Question

I'm creating a PL/SQL function that returns an employe's information, by asking for the employee's id. The function get this code/ID and searches for the employee's info.

My problem is that I also need to add another column that I get from joining another table but I get PL/SQL: ORA-00904: "EMPLOYE"."IDEMPLOYE": identificateur non valide . is it possible to?

Here is my code:

CREATE OR REPLACE FUNCTION fNombreProjet(id_employe IN employe.idemploye%type) 
    RETURN sys_refcursor is data_emp sys_refcursor; 
BEGIN
    OPEN data_emp for
    SELECT  emp_recherché.IDEMPLOYE ,emp_recherché.NOMEMPLOYE
    FROM Employe emp_recherché
    WHERE idEmploye = id_employe;
    RETURN data_emp;
END;    
/

SELECT fNombreProjet(2000) result FROM dual;

this is the query Im trying to join in the PL/SQL select (where the column I want is count(*))

SELECT  employe.IDEMPLOYE, employe.NOMEMPLOYE, count(*) 
FROM employe
join ressourcesprojet on employe.idemploye=ressourcesprojet.idemploye
group by  employe.IDEMPLOYE, employe.NOMEMPLOYE;

The PL/SQL mix of the two Ive been trying without success.(Doesnt work)

CREATE OR REPLACE FUNCTION fNombreProjet(id_employe IN employe.idemploye%type) 
    RETURN sys_refcursor is data_emp sys_refcursor; 
BEGIN
    OPEN data_emp for
    SELECT  emp_recherché.IDEMPLOYE ,emp_recherché.NOMEMPLOYE, count(*)
    FROM Employe emp_recherché 
    join ressourcesprojet on employe.idemploye=ressourcesprojet.idemploye
    WHERE idEmploye = id_employe
    group by emp_recherché.IDEMPLOYE ,emp_recherché.NOMEMPLOYE;
    RETURN data_emp;
END;    
/

Answer 1

I fixed it. I had to use emp_rechercé instead of employe and place where before the group by. And a few more little details. here it is:

CREATE OR REPLACE FUNCTION fNombreProjet(id_employe IN employe.idemploye%type) 
    RETURN sys_refcursor is data_emp sys_refcursor; 
BEGIN
    OPEN data_emp for
    SELECT  emp_recherché.IDEMPLOYE ,emp_recherché.NOMEMPLOYE, count(*)
    FROM Employe emp_recherché 
    join ressourcesprojet on emp_recherché.idemploye=ressourcesprojet.idemploye
    WHERE emp_recherché.idEmploye = id_employe
    group by emp_recherché.IDEMPLOYE ,emp_recherché.NOMEMPLOYE;
    RETURN data_emp;
END;    
/