bvarghese1 commented on code in PR #26407:
URL: https://github.com/apache/flink/pull/26407#discussion_r2035654644
##########
flink-table/flink-table-planner/src/main/scala/org/apache/flink/table/planner/plan/optimize/program/FlinkChangelogModeInferenceProgram.scala:
##########
@@ -310,18 +310,26 @@ class FlinkChangelogModeInferenceProgram extends
FlinkOptimizeProgram[StreamOpti
.newBuilder()
.addContainedKind(ModifyKind.INSERT)
- // All aggregates are computed over the same window and order by is
supported for only 1 field
- val orderKeyIndex =
-
over.logicWindow.groups.get(0).orderKeys.getFieldCollations.get(0).getFieldIndex
- val orderKeyType =
over.logicWindow.getRowType.getFieldList.get(orderKeyIndex).getType
if (
- !FlinkTypeFactory.isRowtimeIndicatorType(orderKeyType)
- && !FlinkTypeFactory.isProctimeIndicatorType(orderKeyType)
+ !over.logicWindow.groups.isEmpty && !over.logicWindow.groups
+ .get(0)
+ .orderKeys
+ .getFieldCollations
+ .isEmpty
Review Comment:
Ideally this one condition should be enough i.e.
`!groups.get(0).orderKeys.getFieldCollations.isEmpty` but the condition
`!groups.isEmpty` is just a safety check. We can remove the safety check since
there will always be 1 group.
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