cloud-fan commented on code in PR #45846:
URL: https://github.com/apache/spark/pull/45846#discussion_r1549621444
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ColumnResolutionHelper.scala:
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@@ -542,23 +544,24 @@ trait ColumnResolutionHelper extends Logging with
DataTypeErrorsBase {
u: UnresolvedAttribute,
id: Long,
isMetadataAccess: Boolean,
- q: Seq[LogicalPlan]): (Option[NamedExpression], Boolean) = {
- q.iterator.map(resolveDataFrameColumnRecursively(u, id, isMetadataAccess,
_))
- .foldLeft((Option.empty[NamedExpression], false)) {
- case ((r1, m1), (r2, m2)) =>
- if (r1.nonEmpty && r2.nonEmpty) {
- throw QueryCompilationErrors.ambiguousColumnReferences(u)
- }
- (if (r1.nonEmpty) r1 else r2, m1 | m2)
+ q: Seq[LogicalPlan],
+ d: Int): Option[(NamedExpression, Int)] = {
Review Comment:
```suggestion
currentDepth: Int): Option[(NamedExpression, Int)] = {
```
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