panbingkun commented on code in PR #43713:
URL: https://github.com/apache/spark/pull/43713#discussion_r1387391412
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveLateralColumnAliasReference.scala:
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@@ -170,7 +170,8 @@ object ResolveLateralColumnAliasReference extends
Rule[LogicalPlan] {
case (a: Alias, idx) =>
val lcaResolved = unwrapLCAReference(a)
// Insert the original alias instead of rewritten one to detect
chained LCA
- aliasMap += (a.toAttribute -> AliasEntry(a, idx))
+ aliasMap =
+ AttributeMap(aliasMap.baseMap.values.toMap + (a.toAttribute ->
AliasEntry(a, idx)))
Review Comment:
```suggestion
aliasMap ++= AttributeMap(Map(a.toAttribute -> AliasEntry(a,
idx)))
```
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