alamb opened a new issue, #10628: URL: https://github.com/apache/datafusion/issues/10628
### Is your feature request related to a problem or challenge? The usecase of walking `LogicalPlan` to either analyze the plan or rewrite it has come up multiple times recently Specifically I think both @goldmedal and @cisaacson have asked about this recently and so I think the documentation is not clear enough ### Describe the solution you'd like In order to help people do this, I would like to add some examples of how to walk the tree I suggest first adding simple doc example in the [docs of `LogicalPlan` itself ](https://github.com/apache/datafusion/blob/b14e92f30057868da8e7b428223e66c6300773a1/datafusion/expr/src/logical_plan/plan.rs#L68-L69) The example would do somethig like create a plan using `LogicalPlanBuilder` ``` Project Filter Scan ``` And then show how to: 1. Use `TreeNode::apply` to recursively find something about the scan (maybe the table name?) 2. Use the `TreeNode::rewrite` to recursively rewrite and remove the Filter (or something) I think those would be relatively short examples to write and would illustrate the key apis ### Describe alternatives you've considered Bonus points for a more full featured example (perhaps linked from the `LogicalPlan` docs) of how use / walk / manipulate LogicalPlans Similarly to https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/expr_api.rs, perahaps `datafusion-examples/examples/plan_walk.rs` or something ### 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
