PL/SQL Procedure SELECT Input- Error PLS-00306 - oracle

Question

Hello I'm a beginner at PL/SQL and some help would be appreciated.
So I have this procedure here and my goal is to have it so that when this procedure is executed that I can enter a 5 digit integer (a zipcode) and it will just select those values from the table and display just as if I've done a query like
SELECT * FROM customers WHERE customer_zipcode = "input zipcode".
create or replace PROCEDURE LIST_CUSTOMER_ZIPCODE(
p_zipcode IN customers.customer_zipcode%TYPE,
p_disp OUT SYS_REFCURSOR)
-- User input Variable, Display Variable
IS
BEGIN
OPEN p_disp for SELECT customer_first_name, customer_zipcode FROM customers
WHERE customer_zipcode=p_zipcode;
EXCEPTION
-- Input Sanitization
WHEN no_data_found THEN
dbms_output.put_line('-1');
END;
EXEC LIST_CUSTOMER_ZIPCODE(07080);
When I execute this command I just keep getting this error.
https://i.stack.imgur.com/nCI8T.png

Answer 1

If you are using SQL*Plus or SQL Developer then you can declare a bind variable and then call the procedure passing the variable and then print it:
SELECT * FROM customers WHERE customer_zipcode = "input zipcode".
create or replace PROCEDURE LIST_CUSTOMER_ZIPCODE(
p_zipcode IN customers.customer_zipcode%TYPE,
p_disp OUT SYS_REFCURSOR
)
IS
BEGIN
OPEN p_disp FOR
SELECT customer_first_name, customer_zipcode
FROM customers
WHERE customer_zipcode = p_zipcode;
EXCEPTION
-- Input Sanitization
WHEN no_data_found THEN
dbms_output.put_line('-1');
END;
/
VARIABLE cur SYS_REFCURSOR;
EXEC LIST_CUSTOMER_ZIPCODE('07080', :cur);
PRINT cur;
However, your exception handling block is never going to be called as the cursor can return zero rows without raising that exception so the procedure could be simplified to:
create or replace PROCEDURE LIST_CUSTOMER_ZIPCODE(
p_zipcode IN customers.customer_zipcode%TYPE,
p_disp OUT SYS_REFCURSOR
)
IS
BEGIN
OPEN p_disp FOR
SELECT customer_first_name, customer_zipcode
FROM customers
WHERE customer_zipcode = p_zipcode;
END;
/

Answer 2

You can't just execute such a procedure as it expects 2 parameters; one is IN, while another is OUT (ref cursor which contains result set).
I don't have your tables so I'll demonstrate it using Scott's sample schema by passing department number and returning list of employees working in that department.
Procedure:
SQL> set serveroutput on
SQL> create or replace procedure p_list
2 (p_deptno in dept.deptno%type,
3 p_disp out sys_refcursor
4 )
5 is
6 begin
7 open p_disp for select ename, job from emp
8 where deptno = p_deptno;
9 end;
10 /
Procedure created.
This is how you use it:
SQL> declare
2 l_list sys_refcursor;
3 l_ename emp.ename%type;
4 l_job emp.job%type;
5 begin
6 p_list(10, l_list); --> calling the procedure; use 2 parameters
7
8 loop
9 fetch l_list into l_ename, l_job;
10 exit when l_list%notfound;
11 dbms_output.put_line(l_ename ||' - '|| l_job);
12 end loop;
13 end;
14 /
CLARK - MANAGER
KING - PRESIDENT
MILLER - CLERK
PL/SQL procedure successfully completed.
SQL>

Answer 3

TRY EXEC LIST_CUSTOMER_ZIPCODE(:p_Zipcode);
If you put ':' before any string, It will become substitution string and you can type your input.