use test_db;
db.test_col.insert({value: 1});
db.test_col.insert({value: 2});

var mapF =  function () { emit(this.value, {count: 1}) };
var reduceF = function(key, values) {
        var result = {count: 0};
        values.forEach(function(value) {
          result.count += value.count;
        });
        return result;
      };

db.test_col.mapReduce(
    mapF, reduceF,
    {
        query: { value: {$ne: 1}},
        out: "inline"
    }
    );