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Type: Improvement
Resolution: Unresolved
Priority: Major - P3
Fix Version/s: features we're not sure of
Affects Version/s: 3.2.1
Component/s: Aggregation Framework
Labels:
None

Assigned Teams:

Query Optimization
Confidence Status:
None
Work Order:
3

Aha! Reference:
None
Tracking Level:
None
Risk Status:
None
Exec Notes:
None
Goal Name:
None
Goal Link:
None

Now $lookup returns array of matched Objects, this new return single Object (as single Object field, not Array)

is duplicated by

SERVER-27589 Return single object instead of array in $lookup if useer want

Closed

SERVER-32417 Add syntax to express $lookup-$unwind with a single aggregation stage

Closed

SERVER-40635 Introduce $lookupOne as an optimzable aggregation step

Closed

related to

SERVER-28705 Add optimization to execute $lookup on local shards when possible

Closed

Assignee:: [DO NOT USE] Backlog - Query Optimization
Reporter:: Jose Antonio Illescas Olmo
Participants:: [DO NOT USE] Backlog - Query Optimization, Asya Kamsky, Dissatisfied Former User, Ilya Mokin, Jose Antonio Illescas Olmo, Manuel Boira, Roman Lehnert, Stennie Steneker
Votes:: 5 Vote for this issue
Watchers:: 13 Start watching this issue

Created:: Jan 30 2016 06:54:10 PM UTC
Updated:: Apr 06 2023 03:39:07 PM UTC