What could be the possible error of the given code below? DECLARE V_sum_sal NUMBER(10,2); v_deptno NUMBER NOT NULL := 60; BEGIN SELECT SUM(salary) FROM employees WHERE department_id = v_deptno; DBMS_OUTPUT.PUT_LINE('Dep \#60 Salary Total: ' || v_sum_sal); END; Group function error Variable error Missing INTO clause Query returns more than 1 row Is there something missing in the given code? DECLARE v_myage NUMBER : = 31; BEGIN IF v_myage