alamb opened a new issue, #15267: URL: https://github.com/apache/datafusion/issues/15267
### Is your feature request related to a problem or challenge? By default DataFusion doesn't support many operators, for example `->` ```sql > set datafusion.sql_parser.dialect = postgres; 0 row(s) fetched. Elapsed 0.001 seconds. > select 'foo'->'bar'; This feature is not implemented: Unsupported SQL binary operator Arrow ``` However, you can use the `ExprPlanner` API to support htem - There is a lower level API that lets you customize how expressions are planned, here: https://docs.rs/datafusion/latest/datafusion/logical_expr/planner/trait.ExprPlanner.html - https://docs.rs/datafusion/latest/datafusion/execution/trait.FunctionRegistry.html#method.register_expr_planner However, when @dadepo asked about this in https://github.com/apache/datafusion/discussions/15264 it was not clear it was supported After some digging I found an example in our tests: https://github.com/apache/datafusion/blob/87eec43856a5d8cefef24d1ff85d375d2b58d8c2/datafusion/core/tests/user_defined/expr_planner.rs#L35-L124 ### Describe the solution you'd like I would like a secton in in the [docs](https://datafusion.apache.org) that has an example of how to do this Perhaps in this page: https://datafusion.apache.org/library-user-guide/adding-udfs.html Or maybe it needs its own page 🤔 ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- 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
