AveryQi115 commented on code in PR #53664:
URL: https://github.com/apache/spark/pull/53664#discussion_r2796527683
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/InlineCTE.scala:
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@@ -60,9 +60,20 @@ case class InlineCTE(
// because:
// 1) It is fine to inline a CTE if it references another CTE that is
non-deterministic;
// 2) Any `CTERelationRef` that contains `OuterReference` would have been
inlined first.
+
+ def hasOuterReference(plan: LogicalPlan): Boolean = {
+ plan.exists {
+ case table: ResolvedInlineTable =>
+ // Check rows explicitly as they're not included in plan.expressions
+ table.rows.flatten.exists(_.isInstanceOf[OuterReference])
Review Comment:
We can also put the inlining constants in RewriteCorrelatedInlineTable.
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