[SERVER-80698] Implement $size aggregation expression in SBE Created: 01/Sep/23  Updated: 02/Feb/24

Status: Open
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Arun Banala Assignee: Xuan Zhang
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-80561 Check perf impact of running in hybri... Closed
Assigned Teams:
Query Execution
Sprint: QE 2023-09-18, QE 2023-10-02, QE 2023-10-16, QE 2023-10-30, QE 2023-11-13, QE 2023-11-27, QE 2023-12-11, QE 2023-12-25, QE 2024-01-08, QE 2024-01-22, QE 2024-02-05, QE 2024-02-19
Participants:

 Description   

The $size aggregation expression is being used for a count command (more broadly for $count in $group) optimization for time-series. The lack of this operator means that we would be forced to run a lot of time-series queries in classic.



 Comments   
Comment by Kyle Suarez [ 05/Sep/23 ]

https://www.mongodb.com/docs/manual/reference/operator/aggregation/size/

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