Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/7920#discussion_r36266902
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -140,7 +140,7 @@ class Analyzer(
object ResolveAliases extends Rule[LogicalPlan] {
private def assignAliases(exprs: Seq[NamedExpression]) = {
// The `UnresolvedAlias`s will appear only at root of a expression
tree, we don't need
- // to transform down the whole tree.
+ // to resolveOperator down the whole tree.
--- End diff --
Seems this comment got accidentally changed.
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