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Type:
Task
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Resolution: Duplicate
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Labels:
http://docs.mongodb.org/manual/reference/method/db.collection.aggregate/
The example output includes the keys "ok" and "result".
This no longer holds true as of 2.5.3 as aggregate() now returns a cursor by default:
> db.articles.aggregate(
... { $project : {
... author : 1,
... tags : 1,
... }
... },
... { $unwind : "$tags" },
... { $group : {
... _id : { tags : "$tags" },
... authors : { $addToSet : "$author" }
... }
... }
... )
{ "_id" : { "tags" : "sport" }, "authors" : [ "bob" ] }
{ "_id" : { "tags" : "good" }, "authors" : [ "bob" ] }
{ "_id" : { "tags" : "fun" }, "authors" : [ "bob" ] }
>