hsyuan commented on pull request #1976: URL: https://github.com/apache/calcite/pull/1976#issuecomment-628792593
> How do you guarantee only logical nodes are generated in transformation rule? It is allowed, but not encouraged. Just a contract, unless we add a check inside `call.transformTo`, which can be added in next version. > Also please make sure to include this in the release note as a potential breaking change. What do you think it will break? ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org