spring-projects / spring-projects/spring-data-mongodb
Allow $stdDevPop & stdDevSamp operators to be used in $project, $addFields, $set, ... aggregation stages.
Open
Nobody has claimed this yet.
in: aggregation-framework
theme: MongoDB 5.0
type: enhancement
- Dominant language
- Java
- Stars
- 1.7k
- Forks
- 1.1k
- PR merge metrics
- No merged PRs in 30d
Description
Starting with MongoDB 5.0 $stdDevPop & stdDevSamp operators can be used in more stages than just $group.
Full list available via:
https://docs.mongodb.com/manual/reference/operator/aggregation/stdDevPop/
https://docs.mongodb.com/manual/reference/operator/aggregation/stdDevSamp/
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing the linked MongoDB documentation for $stdDevPop and $stdDevSamp, then trace how aggregation operators are validated for pipeline stages in this repository. Done means both operators are accepted in the additional stages listed by MongoDB, with appropriate coverage in the existing aggregation tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, mongodb
- Domain
- backend, databases
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100