Question

I have a basic structure like this:

> db.users.findOne()
{
    "_id" : ObjectId("4f384903cd087c6f720066d7"),
    "current_sign_in_at" : ISODate("2012-02-12T23:19:31Z"),
    "current_sign_in_ip" : "127.0.0.1",
    "email" : "[e-mail]",
    "encrypted_password" : "$2a$10$fu9B3M/.Gmi8qe7pXtVCPu94mBVC.gn5DzmQXH.g5snHT4AJSZYCu",
    "last_sign_in_at" : ISODate("2012-02-12T23:19:31Z"),
    "last_sign_in_ip" : "127.0.0.1",
    "name" : "Trip Jameson",
    "sign_in_count" : 100,
    "usertimes" : [
        ...thousands and thousands of records like this one....
        {
            "enddate" : 348268392.115282,
            "idle" : 0,
            "startdate" : 348268382.116728,
            "title" : "My Awesome Title"
        },
    ]
}

So I want to find only usertimes for a single user where the title was “My Awesome Title”, and then I want to see what the value for “idle” was in that record(s)

So far all I can figure out is that I can find the entire user record with a search like:

> db.users.find({'usertimes.title':"My Awesome Title"})

This just returns the entire User record though, which is useless for my purposes. Am I misunderstanding something?

Answer 1

Return only partial embedded documents is currently not supported by MongoDB
The matching User record will always be returned (at least with the current MongoDB version).

see this question for similar reference

Filtering embedded documents in MongoDB

This is the correspondent Jira on MongoDB space

http://jira.mongodb.org/browse/SERVER-142