presto-geospatial/src/main/java/io/prestosql/plugin/geospatial/BingTileOperators.java/BingTileOperators/isDistinctFrom
class BingTileOperators:    @ScalarOperator(IS_DISTINCT_FROM)
    @SqlType(StandardTypes.BOOLEAN)
    public static boolean isDistinctFrom(
            @SqlType(BingTileType.NAME) long left,
            @IsNull boolean leftNull,
            @SqlType(BingTileType.NAME) long right,
            @IsNull boolean rightNull)
    {
        if (leftNull != rightNull) {
            return true;
        }
        if (leftNull) {
            return false;
        }
        return notEqual(left, right);
    }