[R] Support inequality joins
- Dominant language
- C++
- Stars
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- Avg merge
- 3d 13h
- Merged PRs (30d)
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Description
dplyr 1.1 supports inequality conditions in joins. We should explore what we can support.
**Reporter**: [Neal Richardson](https://issues.apache.org/jira/browse/ARROW-14264) / @nealrichardson
#### Related issues:
- [[C++][Compute] Implement outer join with support for residual predicates](https://github.com/apache/arrow/issues/29281) (depends upon)
**Note**: *This issue was originally created as [ARROW-14264](https://issues.apache.org/jira/browse/ARROW-14264). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
Contributor guide
Research direction
Read the dplyr 1.1 inequality-join behavior and the dependent C++ issue #29281 first. Use those references to determine which inequality conditions Apache Arrow should support and define completion around implementing and validating that agreed scope in the R interface.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, r
- Domain
- data
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100