Github user huawei-flink commented on a diff in the pull request:
https://github.com/apache/flink/pull/3547#discussion_r106616178
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/datastream/DataStreamOverAggregate.scala
---
@@ -106,9 +113,14 @@ class DataStreamOverAggregate(
if (overWindow.lowerBound.isUnbounded &&
overWindow.upperBound.isCurrentRow) {
createUnboundedAndCurrentRowProcessingTimeOverWindow(inputDS)
+ } // lowerbound is a BasicType and upperbound is PRECEEDING or
CURRENT ROW
+ else if
(overWindow.lowerBound.getOffset.getType.isInstanceOf[BasicSqlType]
--- End diff --
I guess that is also a way to do it. The check allows to distinguish
between time bounded and row bounded. I have no particular affection for my
solution, it just worked. I will apply and test yours as well.
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