The find() in MongoDB selects documents in a collection or view and returns a cursor to the selected documents.
The find() method with no parameters returns all documents from a collection and returns all fields for the documents. Let us see an example and create a collection with documents −
> db.demo405.insertOne({"StudentInfo":{"Name":"Chris"}}); { "acknowledged" : true, "insertedId" : ObjectId("5e6f9134fac4d418a0178595") } > db.demo405.insertOne({"StudentInfo":{"Name":"David"}}); { "acknowledged" : true, "insertedId" : ObjectId("5e6f9138fac4d418a0178596") } > db.demo405.insertOne({"StudentInfo":{"Name":"Bob"}}); { "acknowledged" : true, "insertedId" : ObjectId("5e6f913cfac4d418a0178597") } > db.demo405.insertOne({"StudentInfo":{"Name":"John"}}); { "acknowledged" : true, "insertedId" : ObjectId("5e6f9140fac4d418a0178598") }
Display all documents from a collection with the help of find() method −
> db.demo405.find();
This will produce the following output −
{ "_id" : ObjectId("5e6f9134fac4d418a0178595"), "StudentInfo" : { "Name" : "Chris" } } { "_id" : ObjectId("5e6f9138fac4d418a0178596"), "StudentInfo" : { "Name" : "David" } } { "_id" : ObjectId("5e6f913cfac4d418a0178597"), "StudentInfo" : { "Name" : "Bob" } } { "_id" : ObjectId("5e6f9140fac4d418a0178598"), "StudentInfo" : { "Name" : "John" } }