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Type: New Feature
Resolution: Unresolved
Priority: Major - P3
Fix Version/s: None
Affects Version/s: None
Component/s: Aggregation Framework
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Query Optimization

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.

is duplicated by

SERVER-23839 Aggregation accumulators does not allow the new "direct" array notation

Closed

SERVER-14340 Option for $addToSet to work on array members

Closed

SERVER-27484 allow $setUnion in $group

Closed

is related to

SERVER-94575 Enable featureFlagArrayAccumulators

Open

SERVER-94760 [SBE] Implement $concatArrays $setWindowFields accumulator in SBE

In Code Review

SERVER-92388 [SBE] Implement $setUnion group accumulator in SBE

Closed

SERVER-94470 [SBE] Implement $concatArrays group accumulator in SBE

Closed

SERVER-94759 [SBE] Implement $setUnion $setWindowFields accumulator in SBE

Closed

related to

SERVER-44174 $push and $addToSet should restrict memory usage

Closed

SERVER-29339 allow using $reduce expression as accumulator in $group

Backlog

(3 is related to, 2 related to)

Assignee:: Militsa Sotirova

Reporter:: John Butler

Participants:: Asya Kamsky, Charlie Swanson, David Storch, Githook User, John Butler, Marc Tinkler, Militsa Sotirova, Neil Lunn, Oliver Eberle, Ramon Fernandez Marina

Votes:: 20 Vote for this issue

Watchers:: 34 Start watching this issue

Created:: Nov 22 2014 09:54:05 PM UTC

Updated:: Oct 28 2024 01:28:40 PM UTC

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