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[SPARK-54905][SQL] Simplify foreachWithSubqueries implementation in QueryPlan #53714

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[SPARK-54905][SQL] Simplify foreachWithSubqueries implementation in QueryPlan #53714

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7 changes: 4 additions & 3 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/QueryPlan.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -623,11 +623,12 @@ abstract class QueryPlan[PlanType <: QueryPlan[PlanType]]
* A variant of [[foreach]] which considers plan nodes inside subqueries as well.
*/
def foreachWithSubqueries(f: PlanType => Unit): Unit = {
def actualFunc(plan: PlanType): Unit = {
def traverse(plan: PlanType): Unit = {
f(plan)
plan.subqueries.foreach(_.foreachWithSubqueries(f))
plan.subqueries.foreach(traverse)
plan.children.foreach(traverse)
}
foreach(actualFunc)
traverse(this)
}

/**
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