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  1. Core Server
  2. SERVER-69261

Generate mkobj expressions instead of MkBsonObjStage for PROJECTION_COVERED and PROJECTION_SIMPLE

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    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Won't Do
    • None
    • None
    • None
    • Query Execution
    • 5

    Description

      Once SERVER-68970 is complete, the 'generateProjection' will, in a large number of cases, use traverseP + mkobj expressions to evaluate a projection. This method, however, is only called when translating a PROJECTION_DEFAULT.
      This ticket tracks the work to extend the use of mkobj expressions when translating a PROJECTION_SIMPLE and a PROJECTION_COVERED.

      (Also, this task should see whether or not this improves the performance of any workloads that leverage these query solution nodes).

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              backlog-query-execution Backlog - Query Execution
              mihai.andrei@mongodb.com Mihai Andrei
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