Perf : merge consecutive calls to $match

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    • Type: Improvement
    • Resolution: Done
    • Priority: Major - P3
    • 2.5.4
    • Affects Version/s: None
    • Component/s: Aggregation Framework
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    • Fully Compatible
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    • 3
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      I have an index on a and b :

      {"a":1, "b":1}

      If I use two consecutive $match'es in the pipeline, the index is used but only for the "a" part.
      {$match:{"a":xxx}}, {$match:{"b":xxx}}

      The server could optimize this case by internally merge the two match.

            Assignee:
            Mathias Stearn
            Reporter:
            Yann Moisan
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              Created:
              Updated:
              Resolved: