gene-bordegaray commented on code in PR #24670:
URL: https://github.com/apache/datafusion/pull/24670#discussion_r3919761930


##########
datafusion/physical-plan/src/projection.rs:
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@@ -1331,12 +1357,20 @@ pub fn update_join_filter(
 fn try_collapse_projection_chain(
     outer: &ProjectionExec,
 ) -> Result<Option<Arc<dyn ExecutionPlan>>> {
+    if outer.overrides_metadata()? {
+        return Ok(None);
+    }

Review Comment:
   wow this is a cool concept, I haven't heard of this method. Doing right now, 
I will report back here



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