matriv commented on a change in pull request #17634:
URL: https://github.com/apache/flink/pull/17634#discussion_r744115543
##########
File path:
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/functions/aggfunctions/SumAggFunction.java
##########
@@ -66,7 +66,10 @@ public int operandCount() {
ifThenElse(
isNull(operand(0)),
sum,
- ifThenElse(isNull(sum), operand(0), plus(sum,
operand(0)))))
+ ifThenElse(
Review comment:
Thank you @cshuo, Implemented a new `plusSum` operator and improved the
tests. Please check again.
Additionally I've created
[FLINK-24809](https://issues.apache.org/jira/browse/FLINK-24809) to check and
fix the rest of the aggregate functions.
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