// find user and return just _id and name field

User.findOne({ email: email }).select('name');

​

// find user and return all fields except _id

User.findOne({ email: email }).select({ _id: 0 });

// find each person with a last name matching 'Ghost', ***selecting the `name` and `occupation` fields***

Person.findOne({ 'name.last': 'Ghost' }, ***'name occupation'***, function (err, person) {

  if (err) return handleError(err);

  console.log('%s %s is a %s.', person.name.first, person.name.last, person.occupation) // Space Ghost is a talk show host.

})

// INCLUDE SPECIFIC FIELDS

// find user and return only name and phone fields

User.findOne({ email: email }, 'name phone');

​

// EXCLUDE SPECIFIC FIELD

// find user and return all fields except password

User.findOne({ email: email }, '-password');

// find user and return just _id field

User.findOne({ email: email }, {

  projection: { _id: 1 }

});