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  1. Core Server
  2. SERVER-16284

Allow for $pushall / $push with $each to allow pushing all elements of array in $group

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    • Query Optimization

    Description

      I would like to be able to push all elements of an array field into a new field. So, in a $group, I could do a $push or $addToSet of a field that is an array field and the resulting field would be an array of the elements instead of an array of arrays.

      Seems like the $each operator in update is the solution if added to aggregations.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. SERVER-23839 Aggregation accumulators does not allow the new "direct" array notation

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-14340 Option for $addToSet to work on array members

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-27484 allow $setUnion in $group

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-29339 allow using $reduce expression as accumulator in $group

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

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              backlog-query-optimization Backlog - Query Optimization
              dancerjohn John Butler
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                Created:
                Updated: