[SERVER-3252] aggregation: allow _id to be a non-structured type Created: 13/Jun/11  Updated: 12/Jul/16  Resolved: 27/Sep/11

Status: Closed
Project: Core Server
Component/s: Aggregation Framework
Affects Version/s: None
Fix Version/s: 2.1.0

Type: Improvement Priority: Minor - P4
Reporter: Chris Westin Assignee: Chris Westin
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
is depended on by SERVER-447 new aggregation framework Closed
Participants:

 Description   

$group _id requires an object, as _id :

{ ... }

. We should also allow a single field as _id : "foo.bar".


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