Mongo basics drills

mongo-basics-drills.js

//Get All
  db.restaurants.find()
//Limit and sort
  db.restaurants.find().sort({name: 1}).limit(10)
//Get by _id
  var id = db.restaurants.findOne()._id
  db.restaurants.findOne({_id: id}})
//Get by value
  db.restaurants.find({borough: "Queens"})
//Count
  db.restaurants.count()
//Count by nestest value
  db.restaurants.find({"address.zipcode": "11206"}).count()
//Delete by id
  var id = db.restaurants.findOne()._id
  db.restaurants.deleteOne({_id: id})
//Update a single document
  var id = db.restaurants.findOne()._id
  db.restaurants.updateOne( { _id: id}, {$set: {"name": "Bizz Bar Bang"}});
//Update many documents
  db.restaurants.updateMany({ "address.zipcode": "10035" }, { $set: {"address.zipcode": "10036"} } );