hanyuzheng7 commented on code in PR #22917:
URL: https://github.com/apache/flink/pull/22917#discussion_r1248317688
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/functions/BuiltInFunctionDefinitions.java:
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@@ -303,7 +302,7 @@ ANY, and(logical(LogicalTypeRoot.BOOLEAN), LITERAL)
.name("ARRAY_MAX")
.kind(SCALAR)
.inputTypeStrategy(arrayFullyComparableElementType())
- .outputTypeStrategy(new ArrayElementOutputTypeStrategy())
+
.outputTypeStrategy(forceNullable(SpecificTypeStrategies.ARRAY_ELEMENT))
Review Comment:
Hi, @liuyongvs I also have question about this, you use forceNullable to
force INT NOT NULL -> INT.
But the SpecificTypeStrategies.ARRAY_ELEMENT return type is INT NOT NULL,
does it?
why don't use force INT NOT NULL -> INT here
https://github.com/apache/flink/pull/22917#discussion_r1248318340
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