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  1. Core Server
  2. SERVER-80761

[CQF] Efficient lowering of sampling plans to SBE

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    • Type: Icon: Improvement Improvement
    • Resolution: Won't Fix
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • Query Optimization

       

      • Create a custom lowering transport for sampling queries.
      • Add handlers for
      • PhysScan
      • Eval
      • Filter
      • Limit
      • NLJ
      • No use of cascades properties: will need to make use of FieldProjectionMap of sargable node.
      • Use SBEExpressionLowering to lower expressions directly which hang off of Filter and Eval nodes.
      • Add a node that counts on top (group)
      • might be simpler to do during this lowering

            Assignee:
            svilen.mihaylov@mongodb.com Svilen Mihaylov (Inactive)
            Reporter:
            svilen.mihaylov@mongodb.com Svilen Mihaylov (Inactive)
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              Created:
              Updated:
              Resolved: