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  1. Core Server
  2. SERVER-98086

Estimate $elemMatch predicates

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    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 8.1.0-rc0
    • Affects Version/s: None
    • Component/s: None
    • None
    • Query Optimization
    • Fully Compatible
    • QO 2024-12-23, QO 2025-01-06, QO 2025-01-20, QO 2025-02-03

      Notice that CE cannot track elemMatch just by a boolean because there can be nested elemMatches. Use a counter.

            Assignee:
            ben.shteinfeld@mongodb.com Ben Shteinfeld
            Reporter:
            timour.katchaounov@mongodb.com Timour Katchaounov
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              Created:
              Updated:
              Resolved: