Implement ExistsMatchExpression narrowing

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    • Type: Task
    • Resolution: Fixed
    • Priority: Major - P3
    • 9.1.0-rc0, 9.1.0-rc1025
    • Affects Version/s: None
    • Component/s: None
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    • Query Optimization
    • Fully Compatible
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      Implement narrowType for ExistsMatchExpression. It uses ElementPath with LeafArrayBehavior::kTraverse and NonLeafArrayBehavior::kTraverse.

      {x: {$exists: true}} with x = any -> x is any except missing
      {x: {$exists: false}} with x = any -> x is missing
      {x: {$exists: true}} with x = number|missing -> x is number

      $jsonSchema required decomposes into $exists. 

            Assignee:
            Vesko Karaganev
            Reporter:
            Vesko Karaganev
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              Created:
              Updated:
              Resolved: