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Type: Improvement
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Resolution: Unresolved
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Priority: Major - P3
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None
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Affects Version/s: 4.4.0
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Component/s: Aggregation Framework, Performance
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None
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Query Optimization
Add support to union with the results of a collection in another database. Syntax could be something like
{$unionWith: { coll: "collection name", db: "db name", pipeline: [] }}