Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/2562#discussion_r82146791
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/plan/logical/operators.scala
---
@@ -497,3 +501,95 @@ case class LogicalRelNode(
override def validate(tableEnv: TableEnvironment): LogicalNode = this
}
+
+case class WindowAggregate(
+ groupingExpressions: Seq[Expression],
+ window: LogicalWindow,
+ aggregateExpressions: Seq[NamedExpression],
+ child: LogicalNode)
+ extends UnaryNode {
+
+ override def output: Seq[Attribute] = {
+ (groupingExpressions ++ aggregateExpressions) map {
+ case ne: NamedExpression => ne.toAttribute
+ case e => Alias(e, e.toString).toAttribute
+ }
+ }
+
+ override def resolveReference(
--- End diff --
Done.
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