Github user suez1224 commented on a diff in the pull request:
https://github.com/apache/flink/pull/5940#discussion_r184866337
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/CommonAggregate.scala
---
@@ -49,11 +49,16 @@ trait CommonAggregate {
val aggs = namedAggregates.map(_.getKey)
val aggStrings = aggs.map( a => s"${a.getAggregation}(${
- if (a.getArgList.size() > 0) {
+ val prefix = if (a.isDistinct) {
--- End diff --
I think one line should be fine here, slightly more compact IMO.
val prefix = if (a.isDistinct) "DISTINCT " else ""
---
