cloud-fan commented on code in PR #46143:
URL: https://github.com/apache/spark/pull/46143#discussion_r2566979148
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala:
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@@ -2053,17 +2053,124 @@ object PushDownPredicates extends Rule[LogicalPlan] {
object PushPredicateThroughNonJoin extends Rule[LogicalPlan] with
PredicateHelper {
def apply(plan: LogicalPlan): LogicalPlan = plan transform applyLocally
+ // Match the column ordering. It's not something we guarantee but seems like
it
Review Comment:
we should guarantee it for the root plan, as optimizer shouldn't change the
query result schema.
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