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  1. Core Server
  2. SERVER-12125

indexed elemMatch query incorrectly matches non-array field

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 2.5.5
    • Fix Version/s: 2.5.5
    • Component/s: Querying
    • Labels:
    • Environment:
      git hash 6902c6b643f645613f231bcde4bf2b1a86f63c21
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL

      Description

      Using a collection with these documents:

      {a: 4}
      {a: [4]}

      and index:

      {a: 1}

      The query

      {a: ${elemMatch: {$gt: 3}}}

      is returning both documents when it should match only

      {a: [4]}

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              Dates

              • Created:
                Updated:
                Resolved: