[SERVER-19166] $stdDev should be available as an expression as well as an accumulator Created: 26/Jun/15  Updated: 26/Apr/19  Resolved: 23/Jul/15

Status: Closed
Project: Core Server
Component/s: Aggregation Framework
Affects Version/s: 3.1.4
Fix Version/s: None

Type: New Feature Priority: Major - P3
Reporter: Charlie Swanson Assignee: James Cohan
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-9625 Support many accumulators in aggregat... Closed
Backwards Compatibility: Fully Compatible
Participants:

 Description   

$stdDev is a new accumulator (usable in a group stage), but should also be available as an expression to operate on arrays.



 Comments   
Comment by Ian Whalen (Inactive) [ 26/Apr/19 ]

Switching "Drivers Changes Needed" from "Maybe" to "Not Needed" since this was closed as something other than Fixed.

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