Query to get last X minutes data with Mongodb

Question

I\'m beginning with mongodb, and I\'m trying to query my db that have this document format:

{ \"_id\" : ObjectId(\"520b8b3f8bd94741bf006033\"), \"value\" : 0         


        

Answer 1

Wow, thanks to @Alistair_Nelson I was able to get the data from n minutes ago, for example to get the last 18 minutes from ISODate("2013-08-14T14:00:00Z"):

db.mycol.find({timestamp:{$gt: new Date(ISODate("2013-08-14T14:00:00Z")-18*60000)}})

To get only the fields I need:

db.mycol.find({timestamp:{$gt: new Date(ISODate("2013-08-14T14:00:00Z")-18*60000)}},{value:1,timestamp:1, _id:0})