presto-main/src/main/java/io/prestosql/type/UnknownOperators.java/UnknownOperators/between
class UnknownOperators:    @ScalarOperator(BETWEEN)
    @SqlType(StandardTypes.BOOLEAN)
    public static boolean between(@SqlType("unknown") boolean value, @SqlType("unknown") boolean min, @SqlType("unknown") boolean max)
    {
        throw new AssertionError("value of unknown type should always be NULL");
    }