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  1. Core Server
  2. SERVER-15697

Create a string accumulator for aggregation

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      Hi,

      I'd like to join all elements in an array in a aggregation.
      A string accumulator, should do the job. Is it plannes to create one?

      Thanks

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          is related to

          New Feature - A new feature of the product, which has yet to be developed. SERVER-41346 all accumulators should be available as expressions

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

          New Feature - A new feature of the product, which has yet to be developed. SERVER-17258 Add $reduce expression operator for rollup of arrays

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

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