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Type: Improvement
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Resolution: Unresolved
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Priority: Major - P3
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Affects Version/s: 3.2.1
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Component/s: Aggregation Framework
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None
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Query Optimization
Now $lookup returns array of matched Objects, this new return single Object (as single Object field, not Array)
- is duplicated by
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SERVER-27589 Return single object instead of array in $lookup if useer want
- Closed
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SERVER-32417 Add syntax to express $lookup-$unwind with a single aggregation stage
- Closed
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SERVER-40635 Introduce $lookupOne as an optimzable aggregation step
- Closed
- related to
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SERVER-28705 Add optimization to execute $lookup on local shards when possible
- Closed