alamb commented on issue #9637:
URL: 
https://github.com/apache/arrow-datafusion/issues/9637#issuecomment-2016891589

   After playing around with this, I have become convinced what is really 
needed is a "TreeMutator" type API on TreeNode that lets us rewrite 
`LogicalNode`s in place -- if we had that API I think we can make the 
DataFusion Optimizer scream


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