[{"name":"A","id":1},{"name":"A","id":2},{"name":"A","id":3},{"name":"A","id":4},{"name":"A","id":5},{"name":"A","id":6},{"name":"A","id":7},{"name":"A","id":8},{"name":"A","id":9}]

db.collection.aggregate([{"$sort":{"name":1}},{"$skip":0},{"$limit":3}])