Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/5604#discussion_r55140466 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicOperators.scala --- @@ -195,9 +202,28 @@ case class Aggregate( child: LogicalPlan) extends UnaryNode { + override lazy val resolved: Boolean = { + val hasWindowExpressions = aggregateExpressions.exists ( _.collect { + case window: WindowExpression => window + }.nonEmpty + ) + + !expressions.exists(!_.resolved) && childrenResolved && !hasWindowExpressions + } + override def output: Seq[Attribute] = aggregateExpressions.map(_.toAttribute) } +case class Window( + projectList: Seq[Attribute], --- End diff -- Why we need a `projectList` in `Window`? Isn't it always equal to `child.output`?
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