alamb commented on code in PR #15770:
URL: https://github.com/apache/datafusion/pull/15770#discussion_r2145903411


##########
datafusion/physical-optimizer/src/enforce_sorting/sort_pushdown.rs:
##########
@@ -70,6 +71,8 @@ pub fn assign_initial_requirements(sort_push_down: &mut 
SortPushDown) {
             // If the parent has a fetch value, assign it to the children
             // Or use the fetch value of the child.
             fetch: child.plan.fetch(),
+            // If the parent has a filter, assign it to the children

Review Comment:
   Thank you -- this makes sense to me
   
   Maybe we can clarify with some additional comments to help the future readers



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