hanyuzheng7 commented on code in PR #22922:
URL: https://github.com/apache/flink/pull/22922#discussion_r1252105421
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flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/inference/strategies/ArrayComparableElementTypeStrategy.java:
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@@ -67,6 +67,9 @@ public ArgumentCount getArgumentCount() {
public Optional<List<DataType>> inferInputTypes(
CallContext callContext, boolean throwOnFailure) {
final List<DataType> argumentDataTypes =
callContext.getArgumentDataTypes();
+ if (argumentDataTypes.size() < 1) {
+ return Optional.empty();
+ }
Review Comment:
you mean I can add a static method at TypeInfereceUtil to do the argument
count check?
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