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  1. Core Server
  2. SERVER-4674

aggregation: treat undefined values the same as null values

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 2.1.2
    • 2.2.0-rc0
    • Aggregation Framework
    • None
    • ALL

    Description

      $group currently doesn't allow for the grouping key to be undefined. The attached script demonstrates the problem, yielding this error for the last two cases:

      {
      "errmsg" : "exception: the _id field for a group must not be undefined",
      "code" : 15956,
      "ok" : 0
      }

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        Issue Links

          is depended on by

          New Feature - A new feature of the product, which has yet to be developed. SERVER-447 new aggregation framework

          • Major - P3 - Major loss of function.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-4638 issue with certain data types?

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              mathias@mongodb.com Mathias Stearn
              cwestin Chris Westin
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              Dates

                Created:
                Updated:
                Resolved: