Using more than one table in a procedure in oracle - oracle

Question

I am new to PL/SQL. Can someone help me to solve the following scenario.
How to get the employee details like emp_id,full_name,department_id,total_salary
if we give Postal code as input parameter to the procedure. I know how to write a procedure to employee details from one table but here we have to use three tables.
Can any one help.
I am also providing the code I have used
Create or Replace Procedure P1(postal_cd varchar2)
as
v_empid number;
v_name varchar2(20);
v_dept_Id number(10);
v_dept_nm varchar2(10);
v_hiredate date;
v_sal number;
begin
select e.emp_id
, e.full_name||' '||e.last_name
, e.department_id
, d.department_name
, e.hiredata
, sum(e.sal) salary
into v_empid
, v_name
, v_dept_id
, v_dept_nm
, v_hiredate
, v_sal
from employees e
inner join departments d
on e.department_id = d.department_id
inner join locations l
on d.location_id = l.location.id
where l.postal_code = postal_cd
;
end;
Kindly let me know if the above query gives me the required result. Thanks in advance.

Answer 1

Since you want to display employee details belonging to a particular postal code the following code should help.
CREATE OR REPLACE PROCEDURE p1(postal_cd VARCHAR2)
AS
v_empid NUMBER;
v_name VARCHAR2(20);
v_dept_Id NUMBER(10);
v_dept_nm VARCHAR2(10);
v_hiredate DATE;
v_sal NUMBER;
CURSOR cur_employee
IS
SELECT e.emp_id,
e.full_name||' '||e.last_name AS emp_full_name,
e.department_id,
d.department_name,
e.hiredata,
e.sal
INTO v_empid,
v_name,
v_dept_id,
v_dept_nm,
v_hiredate,
v_sal
FROM employees e
INNER JOIN departments d ON e.department_id = d.department_id
INNER JOIN locations l ON d.location_id = l.location_id
WHERE l.postal_code = postal_cd;
BEGIN
FOR c_employee IN cur_employee
LOOP
DBMS_OUTPUT.PUT_LINE(c_employee.emp_full_name || ' ' ||c_employee.department_id||' '||c_employee.department_name||' '||c_employee.hiredata ||' ' || c_employee.sal);
END LOOP;
END;