Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/13867#discussion_r68482646
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -911,19 +911,30 @@ 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 = {
+ var throwError = false
plan transformDown {
case q: LogicalPlan if q.childrenResolved && !q.resolved =>
q transformExpressions {
case u @ UnresolvedAttribute(nameParts) =>
withPosition(u) {
try {
- outer.resolve(nameParts, resolver) match {
+ val outer = outers.iterator
--- End diff --
Is there are way to simplify the code below? Two try's seem a bit hacky? We
could move try catch into the loop and throw an exception if we could not
resolve the expr....
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