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) <sub>**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.*</sub>