0
"_id" : ObjectId("576bb4147aac2b0c4ca47dfe"),
"IdUser" : NumberInt(1),
"UserName" : "PeterPan",
"Age" : NumberInt(20),
"IMEI" : "123456789"
"LastLogin" : ISODate("2016-07-09T06:38:15.260+0000"),
"_id" : ObjectId("576bb4147aac2b0c4ca47dfd"),
"IdUser" : NumberInt(2),
"UserName" : "beckham",
"Age" : NumberInt(30),
"IMEI" : "123456789"
"LastLogin" : ISODate("2016-07-06T06:38:15.260+0000"),
"_id" : ObjectId("576bb4147aac2b0c4ca47dfg"),
"IdUser" : NumberInt(3),
"UserName" : "Pham",
"Age" : NumberInt(25),
"IMEI" : "123456789"
"LastLogin" : ISODate("2016-07-08T06:38:15.260+0000"),
Ich möchte alle imei überprüfen duplizieren, $ passen Lastlogin> 8/72016, return 0 Ergebnis (bitte helft mir)mongodb Aggregation Rahmengruppenfeld Spiel