I have this query in oracle:

```
select * from table where col2 in (1,2,3,4);

```

lets say I got this result

```
col1 | col2
-----------
a       1
b       2

```

My 'in (1,2,3,4)' part has like 20 or more options, how can I determinate which values I don't found in my table? in my example 3 and 4 doesn't exist in the table