Serve multi-field estimateNDV() requests in read path

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    • Type: Task
    • Resolution: Fixed
    • Priority: Major - P3
    • 9.1.0-rc0, 9.1.0-rc1022
    • Affects Version/s: None
    • Component/s: None
    • Query Optimization
    • Fully Compatible
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      • Update read path in estimateNDV() to also use persistent samples if NDV is requested for multiple fields and persisted NDV stats are available
      • Fields should be canonically sorted, because NDV(a,b) == NDV(b,a)

            Assignee:
            Aaron Schüttpelz (Inactive)
            Reporter:
            Max Verbinnen
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            Watchers:
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              Created:
              Updated:
              Resolved: