snuyanzin commented on code in PR #26702:
URL: https://github.com/apache/flink/pull/26702#discussion_r2157542074
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/plan/rules/logical/JoinToMultiJoinRule.java:
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@@ -546,12 +557,140 @@ private boolean canCombine(
} else {
Review Comment:
nit: looks like lots of duplicated code here...
can we extract something if it is not too complicated?
i guess at least
```java
for (int joinKey : joinKeys) {
if (inputNullGenFieldList.get(joinKey + beginIndex)) {
return false;
}
}
```
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