How do you call a Procedure in Block SQL - sql

Question

My procedure is below;
I have to create an anonymous block that CALLS the procedure and DISPLAYS all the customers total price and number of cars purchased from that PARTICULAR city
Can someone show me how to do this BLOCK
My procedure is as FOLLOW:
CREATE OR REPLACE PROCEDURE getCars
( v_custname OUT car.custname%TYPE,
v_purchcost OUT car.purchcost%TYPE,
v_city IN customer.custcity%TYPE,
v_count OUT NUMBER,
v_total OUT car.purchcost%TYPE
)
AS
BEGIN
Select c.custname, Count(c.custname), SUM(purchcost)
INTO v_custname, v_count, v_total
From car c
JOIN customer cs
ON c.custname = cs.custname
WHERE cs.custcity = v_city
Group By c.custname;
END;
/
This is what I have for the BLOCK to call procedure BUT ITS NOT WORKING
SET SERVEROUTPUT ON
SET VER OFF
ACCEPT p_city PROMPT 'Enter City Name: ';
DECLARE
CURSOR cname IS
Select customer.custname
INTO custname
From customer
Where UPPER(custcity) = UPPER('&p_city');
BEGIN
FOR
v_car in cname
LOOP
getCars(v_car.custname, v_count, v_total);
END LOOP;
DBMS_OUTPUT.PUT_LINE(v_car.custname||v_count||v_total);
END;
/

Answer 1

If you only want to display them the following can be done:
CREATE OR REPLACE PROCEDURE getcars (
v_city IN customer.custcity%TYPE
) AS
BEGIN
FOR c IN (
SELECT
car.custname,
COUNT(car.custname) count_custname,
SUM(purchcost) purchcost
FROM
car
JOIN customer cs ON car.custname = cs.custname
WHERE
cs.custcity = v_city
GROUP BY
car.custname
) LOOP
dbms_output.put_line('Customer '
|| c.custname
|| ' has bought '
|| c.count_custname
|| ' totaling '
|| purchcost);
END LOOP;
END;
Call the procedure:
DECLARE
v_city customer.custcity%TYPE := 'some city';
BEGIN
getcars(v_city);
END;
Otherwise if you need to return it for each customer then you should use cursors or more complicated data structures.