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  1. Core Server
  2. SERVER-91281

Allow $rank window function to operate without a SortKeyPattern

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    • Type: Icon: Task Task
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
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    • Affects Version/s: None
    • Component/s: None
    • Query Integration

      Currently the operator requires a SortKeyPattern to generate a SortKeyGenerator to generate values to compare. If the inputs given to the accumulator were already sort keys, which should be available via {$meta: "sortKey"}, then it should be faster. This will not only boost some performance, and make it easier to build syntactic sugar for a $rankFusion stage, since we won't have to generate and pass along a sort pattern.

            Assignee:
            charlie.swanson@mongodb.com Charlie Swanson
            Reporter:
            joseph.kanaan@mongodb.com Joe Kanaan
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              Created:
              Updated: