declare
type neste is table of number;
n1 neste :=neste(1,2,3);
n2 neste :=neste(3,2,1);
n3 neste :=neste(2,3,1,3);
n4 neste :=neste(3,2,1);
begin
if (n1 in (n2,n3,n4)) then
dbms_output.put_line('n1 in (n2,n3,n4)');
end if;
if (n1 multiset intersect n2) then
dbms_output.put_line('n1 multiset intersect n2');
end if;
if (n1 submultiset of n3) then
dbms_output.put_line('n1 submultiset of n3');
end if;
end;