presto-main/src/main/java/io/prestosql/type/TinyintOperators.java/TinyintOperators/isDistinctFrom
class TinyintOperators:        @SqlType(StandardTypes.BOOLEAN)
        public static boolean isDistinctFrom(
                @BlockPosition @SqlType(value = StandardTypes.TINYINT, nativeContainerType = long.class) Block left,
                @BlockIndex int leftPosition,
                @BlockPosition @SqlType(value = StandardTypes.TINYINT, nativeContainerType = long.class) Block right,
                @BlockIndex int rightPosition)
        {
            if (left.isNull(leftPosition) != right.isNull(rightPosition)) {
                return true;
            }
            if (left.isNull(leftPosition)) {
                return false;
            }
            return notEqual(TINYINT.getLong(left, leftPosition), TINYINT.getLong(right, rightPosition));
        }