DataQueryBuilder dataQueryBuilder = DataQueryBuilder.create().setProperties("Avg(rating) as calc");
        dataQueryBuilder.setWhereClause("ofDiningTiming.ofPlace.name = 'Ford' and created > '04/19/2019 00:00:00 EST'");
        Backendless.Data.of("Rating").find(dataQueryBuilder, new AsyncCallback<List<Map>>() {
            @Override
            public void handleResponse(List<Map> response) {
                System.out.println("D: " + response.get(0).get("calc"));
            }

            @Override
            public void handleFault(BackendlessFault fault) {
                System.out.println(fault.toString());
            }
        });