var Person = db.model('Person', yourSchema);
// 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.
})
傻了一下,哈哈,官网网站有例子:
‘name occupation’ 就是指定要返回的字段