goldmedal opened a new issue, #13271: URL: https://github.com/apache/datafusion/issues/13271
### Is your feature request related to a problem or challenge? https://github.com/apache/datafusion/pull/13255 introduced the `information_schema.routines` table. I'm working on another table, `inoformation_schema.parameters`. Both need to list all possible combinations of the argument types and return types from a function signature. ### Describe the solution you'd like I implemented the method `TypeSignature::get_possible_types` to initial this framework( https://github.com/apache/datafusion/pull/13255#discussion_r1828682832). Currently, I only implement `TypeSignature::Exact` and `TypeSignature::OneOf`. I think we can invoke the functions in `type_coercion/functions.rs` to do it. https://github.com/apache/datafusion/blob/32266c2676a78a4ea05779d1624dfaa131092ee1/datafusion/expr/src/type_coercion/functions.rs#L301-L305 Given all types as the current type, and then get all possible argument combinations. ### Describe alternatives you've considered _No response_ ### Additional context - https://github.com/apache/datafusion/pull/13255#discussion_r1828682832 - https://github.com/apache/datafusion/issues/12144#issuecomment-2456167400 -- 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...@datafusion.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
