mongodb_aggregation_lbs_search_orderby_time_limit3_offset3.js

// 找捷運台北車站附近距離2公里內的捷運站、依照建立時間做排序、找第4、5、6筆的資料
db.lbs_test.aggregate(
    {
        $geoNear : {
            near : [25.046084,121.517542],
            distanceField : "dist",
            maxDistance : 2 / 111.12
        }
    },
    {
        $sort : {
            time : 1
        }
    },
    {
        $skip : 3
    },
    {
        $limit : 3
    }
);


// 查詢結果
{
        "result" : [
                {
                        "_id" : ObjectId("5238179cdfba7ac818bb5fd3"),
                        "name" : "捷運雙連站",
                        "loc" : {
                                "lat" : 25.057961,
                                "long" : 121.520842
                        },
                        "time" : 17,
                        "dist" : 0.012326926989316265
                },
                {
                        "_id" : ObjectId("5238179ddfba7ac818bb5fd4"),
                        "name" : "捷運民權西路站",
                        "loc" : {
                                "lat" : 25.063093,
                                "long" : 121.519425
                        },
                        "time" : 18,
                        "dist" : 0.017112912376328723
                },
                {
                        "_id" : ObjectId("523817b1dfba7ac818bb5fdc"),
                        "name" : "捷運松江南京站",
                        "loc" : {
                                "lat" : 25.051974,
                                "long" : 121.53303
                        },
                        "time" : 26,
                        "dist" : 0.016570161254487518
                }
        ],
        "ok" : 1
}