Get latest MongoDB record by field of datetime

Question

I have a collection like this:

{     'datetime': some-date,     'lat': '32.00',     'lon': '74.00' }, {     'datetime': some-date,     'lat': '32.00',     'lon': '74.00' } 

How can I get the latest record from MongoDB, where the datetime is the latest one? I want only a single record.

Answer 1

Use sort and limit:

db.col.find().sort({"datetime": -1}).limit(1)