viirya commented on code in PR #38851: URL: https://github.com/apache/spark/pull/38851#discussion_r1036659792
########## sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala: ########## @@ -2109,6 +2110,51 @@ class Analyzer(override val catalogManager: CatalogManager) } } + /** + * Resolves `UnresolvedAttribute` to `OuterReference` if we are resolving subquery plans (when + * `AnalysisContext.get.outerPlan` is set). + */ + object ResolveOuterReferences extends Rule[LogicalPlan] { + override def apply(plan: LogicalPlan): LogicalPlan = { + // Only apply this rule if we are resolving subquery plans. + if (AnalysisContext.get.outerPlan.isEmpty) return plan + + // We must run these 3 rules first, as they also resolve `UnresolvedAttribute` and have + // higher priority than outer reference resolution. + val prepared = ResolveAggregateFunctions(ResolveMissingReferences(ResolveReferences(plan))) Review Comment: Aren't `ResolveMissingReferences` and `ResolveReferences` already run before `ResolveOuterReferences`? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org