alamb commented on issue #4683: URL: https://github.com/apache/arrow-datafusion/issues/4683#issuecomment-1362091923
> This way the placeholders could serve for a 1st pass, then a second inference pass could walk the tree, infer the types and set them if possible or error if it can't figure them out. I think this is a good high level plan (and one that has been sketched out in https://github.com/apache/arrow-datafusion/pull/4701 ) > That being said, implementation might not be too difficult: based upon the statements in the git gist above, types always seem to be: I think starting with simple rules (aka use the type of the other side of the operator) would be good and then we can extend the rules to be more sophisticated over time as needs evolve (like `NOT $1` probably could infer `$1` to be boolean, for example) -- 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: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
