MongoDB Querying for Data ( Getting Started ) limit, skip, sort and count the results of the find() method
Example
Similar to aggregation methods also by the find() method you have the possibility to limit, skip, sort and count the results. Let say we have following collection:
db.test.insertMany([
{name:"Any", age:"21", status:"busy"},
{name:"Tony", age:"25", status:"busy"},
{name:"Bobby", age:"28", status:"online"},
{name:"Sonny", age:"28", status:"away"},
{name:"Cher", age:"20", status:"online"}
])
To list the collection:
db.test.find({})
Will return:
{ "_id" : ObjectId("592516d7fbd5b591f53237b0"), "name" : "Any", "age" : "21", "status" : "busy" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b1"), "name" : "Tony", "age" : "25", "status" : "busy" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b2"), "name" : "Bobby", "age" : "28", "status" : "online" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b3"), "name" : "Sonny", "age" : "28", "status" : "away" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b4"), "name" : "Cher", "age" : "20", "status" : "online" }
To skip first 3 documents:
db.test.find({}).skip(3)
Will return:
{ "_id" : ObjectId("592516d7fbd5b591f53237b3"), "name" : "Sonny", "age" : "28", "status" : "away" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b4"), "name" : "Cher", "age" : "20", "status" : "online" }
To sort descending by the field name:
db.test.find({}).sort({ "name" : -1})
Will return:
{ "_id" : ObjectId("592516d7fbd5b591f53237b1"), "name" : "Tony", "age" : "25", "status" : "busy" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b3"), "name" : "Sonny", "age" : "28", "status" : "away" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b4"), "name" : "Cher", "age" : "20", "status" : "online" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b2"), "name" : "Bobby", "age" : "28", "status" : "online" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b0"), "name" : "Any", "age" : "21", "status" : "busy" }
If you want to sort ascending just replace -1 with 1
To count the results:
db.test.find({}).count()
Will return:
5
Also combinations of this methods are allowed. For example get 2 documents from descending sorted collection skipping the first 1:
db.test.find({}).sort({ "name" : -1}).skip(1).limit(2)
Will return:
{ "_id" : ObjectId("592516d7fbd5b591f53237b3"), "name" : "Sonny", "age" : "28", "status" : "away" }
{ "_id" : ObjectId("592516d7fbd5b591f53237b4"), "name" : "Cher", "age" : "20", "status" : "online" }
