[GitHub] [arrow-datafusion-python] nkarpov opened a new issue, #323: Support arbitrary expression as JOIN condition

["nkarpov (via GitHub)" <gi...@apache.org>]

nkarpov opened a new issue, #323:
URL: https://github.com/apache/arrow-datafusion-python/issues/323

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   I'd like to be able to provide an arbitrary expression as a join key to `join` on `DataFrame`
   
   **Describe the solution you'd like**
   **Describe alternatives you've considered**
   **Additional context**
   It would be nice if `join` supported arbitrary expressions OOTB in the same API, but I noticed there's a `join_on` on the Rust side. We could expose `join_on` for now?
   
   I will submit a PR for this.


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