Dandandan opened a new issue, #3945: URL: https://github.com/apache/arrow-datafusion/issues/3945
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** Currently, we have a `SemiJoin` option, this is basically a left semi join. This works nicely, but because we don't have a `RightSemiJoin` we can't change the build/probe order. If we have a `RightSemiJoin` we could support this - changing to use a right semi join whenever the build side is larger than the probe side. A right semi join returns the right row (at most once) for every match on the left side. **Describe the solution you'd like** Implement `RightSemiJoin` and swap join order if the build side is bigger. **Describe alternatives you've considered** **Additional context** -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
