cytq-123 commented on code in PR #28945:
URL: https://github.com/apache/flink/pull/28945#discussion_r3930557508
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flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/functions/CollectionFunctionsITCase.java:
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@@ -1900,4 +1901,59 @@ private Stream<TestSetSpec> arrayElementTestCases() {
.testResult($("f2").element(), "ELEMENT(f2)", 4.0F,
DataTypes.FLOAT())
.testResult($("f3").element(), "ELEMENT(f3)", null,
DataTypes.INT()));
}
+
+ private Stream<TestSetSpec> arrayFlattenTestCases() {
+ return Stream.of(
+
TestSetSpec.forFunction(BuiltInFunctionDefinitions.ARRAY_FLATTEN)
Review Comment:
@davidradl,Error test cases for a one-dimensional (non-nested) input were
added in CollectionFunctionsITCase#arrayFlattenTestCases() via
testSqlValidationError/testTableApiValidationError, and the validation now
rejects ARRAY<INT> with a clear message.
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