Github user ioana-delaney commented on a diff in the pull request:
https://github.com/apache/spark/pull/13867#discussion_r76093305
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -912,19 +912,24 @@ class Analyzer(
* Resolve the correlated expressions in a subquery by using the an
outer plans' references. All
* resolved outer references are wrapped in an [[OuterReference]]
*/
- private def resolveOuterReferences(plan: LogicalPlan, outer:
LogicalPlan): LogicalPlan = {
+ private def resolveOuterReferences(
+ plan: LogicalPlan,
+ outers: Seq[LogicalPlan]): LogicalPlan = {
plan transformDown {
case q: LogicalPlan if q.childrenResolved && !q.resolved =>
q transformExpressions {
case u @ UnresolvedAttribute(nameParts) =>
withPosition(u) {
- try {
- outer.resolve(nameParts, resolver) match {
- case Some(outerAttr) => OuterReference(outerAttr)
- case None => u
- }
- } catch {
- case _: AnalysisException => u
+ val outer = outers.iterator
--- End diff --
@hvanhovell Thank you for the rewrite. I also considered some
alternatives. But, yes, I've incorporated the changes.
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