MongoDB basics

//Get all
db.restaurants.find();

//Limit and sort
db.restaurants.
  find({borough: "Manhattan"}, {_id: 1, name: 1, address: 1}).
  sort({name: 1}).
  limit(10);

//Get by _id
db.restaurants.find({ _id: ObjectId("59074c7c057aaffaafb0da9d")});

//Get by value
db.restaurants.find({borough:"Queens"});

//Count objects
db.restaurants.count(); 

//Count by nested value
db.restaurants.find({"address.zipcode": 11206});

//Delete by id
db.restaurants.deleteOne({_id: ObjectId("59074c7c057aaffaafb0da9d")});

//Update a single document
var objectId = db.restaurants.findOne({}, {_id: 1})._id
db.restaurants.updateOne(
  {_id: objectId},
  {$set: {name: "Bizz Bar Bang"}}
);

//Update many documents
db.restaurants.updateMany(
  {'address.zipcode': '10035'},
  {$set: {'address.zipcode': '10036'}});