Commands inside mongodb shell

mongodb-shell-commands.txt

Episode 99::
  db.COLLECTION.find() //find returns a cursor
  db.COLLECTION.find().count()
  db.COLLECTION.next() //gives next one document
    const dataCursor = db.COLLECTION.find() //store cursor in a variable
    dataCursor.next() //gives next one document
    datacursor.forEach(doc => {printjson(doc)}) //prints all documents one by one (printjson is provided by mongo shell)
    //after the above forEach the dataCursor.next() will give error, because the cursor is empty
    dataCursor.hasNext() //gives if there is any next document available