Github user wuchong commented on a diff in the pull request:
https://github.com/apache/flink/pull/4133#discussion_r122389818
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/logical/operators.scala
---
@@ -652,6 +653,21 @@ case class WindowAggregate(
case ValidationSuccess => // ok
}
+ // validate property
+ if (propertyExpressions.nonEmpty) {
+ resolvedWindowAggregate.window match {
+ case TumblingGroupWindow(_, _, size) if isRowCountLiteral(size) =>
+ failValidation("Window start and Window end are not accessed " +
+ "on row-counts Tumbling window.")
--- End diff --
Thank you @sunjincheng121 @fhueske for the suggestion.
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