For this, use printjson. Let us first create a collection with documents −
> db.cursorDemo.insertOne({"StudentFullName":"John Smith","StudentAge":23}); { "acknowledged" : true, "insertedId" : ObjectId("5cc7f0d08f9e6ff3eb0ce442") } > db.cursorDemo.insertOne({"StudentFullName":"John Doe","StudentAge":21}); { "acknowledged" : true, "insertedId" : ObjectId("5cc7f0df8f9e6ff3eb0ce443") } > db.cursorDemo.insertOne({"StudentFullName":"Carol Taylor","StudentAge":20}); { "acknowledged" : true, "insertedId" : ObjectId("5cc7f0eb8f9e6ff3eb0ce444") } > db.cursorDemo.insertOne({"StudentFullName":"Chris Brown","StudentAge":24}); { "acknowledged" : true, "insertedId" : ObjectId("5cc7f0f88f9e6ff3eb0ce445") }
Following is the query to display all documents from a collection with the help of find() method −
> db.cursorDemo.find().pretty();
This will produce the following output −
{ "_id" : ObjectId("5cc7f0d08f9e6ff3eb0ce442"), "StudentFullName" : "John Smith", "StudentAge" : 23 } { "_id" : ObjectId("5cc7f0df8f9e6ff3eb0ce443"), "StudentFullName" : "John Doe", "StudentAge" : 21 } { "_id" : ObjectId("5cc7f0eb8f9e6ff3eb0ce444"), "StudentFullName" : "Carol Taylor", "StudentAge" : 20 } { "_id" : ObjectId("5cc7f0f88f9e6ff3eb0ce445"), "StudentFullName" : "Chris Brown", "StudentAge" : 24 }
Following is the query to iterate and print document with printjson −
> db.cursorDemo.find().forEach(printjson);
This will produce the following output −
{ "_id" : ObjectId("5cc7f0d08f9e6ff3eb0ce442"), "StudentFullName" : "John Smith", "StudentAge" : 23 } { "_id" : ObjectId("5cc7f0df8f9e6ff3eb0ce443"), "StudentFullName" : "John Doe", "StudentAge" : 21 } { "_id" : ObjectId("5cc7f0eb8f9e6ff3eb0ce444"), "StudentFullName" : "Carol Taylor", "StudentAge" : 20 } { "_id" : ObjectId("5cc7f0f88f9e6ff3eb0ce445"), "StudentFullName" : "Chris Brown", "StudentAge" : 24 }
Following is the second query if we want the specific fields only like the fields “StudentFullName” and “StudentAge” −
> db.cursorDemo.find({}, { "StudentFullName": 1,"StudentAge":1, "_id": 0 }).forEach(printjson)
This will produce the following output −
{ "StudentFullName" : "John Smith", "StudentAge" : 23 } { "StudentFullName" : "John Doe", "StudentAge" : 21 } { "StudentFullName" : "Carol Taylor", "StudentAge" : 20 } { "StudentFullName" : "Chris Brown", "StudentAge" : 24 }