SQL>
SQL> DECLARE
2 TYPE list IS TABLE OF INTEGER;
3 a LIST := list(1,2,3);
4 b LIST := list(1,2,3,4);
5 BEGIN
6 IF a SUBMULTISET b THEN
7 dbms_output.put_line('Subset.');
8 END IF;
9 END;
10 /
Subset.
PL/SQL procedure successfully completed.