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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: Aggregation Framework, Querying
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Query
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3
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In SERVER-24860 an optimization was added to skip the aggregation and answer the pipeline using just a query plan, if the pipeline can be collapsed into a single $cursor stage. Currently a pipeline with a $project stage can be collapsed if we can generated a covered query plan. We should be able to extend it to uncovered plans and collapse the $project stage, if it is a simple projection without complex pipeline expressions.
- is duplicated by
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SERVER-42905 Push down user-specified projections to PlanStage layer if possible
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- Closed
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- related to
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- Closed
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- Closed
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