hackergin commented on code in PR #24183:
URL: https://github.com/apache/flink/pull/24183#discussion_r1468374158


##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/extraction/TypeInferenceExtractor.java:
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@@ -286,6 +305,15 @@ private static void configureTypedArguments(
 
     private static TypeStrategy translateResultTypeStrategy(
             Map<FunctionSignatureTemplate, FunctionResultTemplate> 
resultMapping) {
+        if (resultMapping.size() == 1) {

Review Comment:
   Yes, after obtaining the type of default parameters in 
OperatorBindingCallContext, there is no need to modify it here.



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