Database
[{"_id":"89787517-0085-3a0a-7232-1105457d6075","totalStoriesPlanned":2,"storiesWithDependencies":0,"plannedVelocity":null,"actualVelocity":0,"businessValue":0,"sprintType":"Dev","storyData":[],"teamExternalId":"b663fa97-22fa-44b9-b845-22a57d408550"},{"_id":"12347517-0085-3a0a-7232-1105457d6075","totalStoriesPlanned":2,"storiesWithDependencies":0,"plannedVelocity":null,"actualVelocity":0,"businessValue":0,"sprintType":"Dev","storyData":[],"teamExternalId":"b663fa97-22fa-44b9-b845-22a57d408550"}]
Query
db.collection.aggregate([{"$group":{"_id":"$teamExternalId","insight":{"$push":"$$ROOT"}}},{"$project":{"teamExternalId":"$_id","_id":0,"insight":1}}])