peter-toth commented on code in PR #10543:
URL: https://github.com/apache/datafusion/pull/10543#discussion_r1614503459


##########
datafusion/physical-plan/src/work_table.rs:
##########
@@ -169,7 +169,7 @@ impl ExecutionPlan for WorkTableExec {
         &self.cache
     }
 
-    fn children(&self) -> Vec<Arc<dyn ExecutionPlan>> {
+    fn children(&self) -> Vec<&Arc<dyn ExecutionPlan>> {

Review Comment:
   ~I think we could return a slice, but the current `Vec` is in sync with 
other implementations how we usually return children. Like 
`LogicalPlan::inputs()` or `ConcreteTreeNode::children()`.
   Or shall we change those too?~



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