Github user walterddr commented on a diff in the pull request:
https://github.com/apache/flink/pull/4929#discussion_r148083555
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/batch/sql/SetOperatorsTest.scala
---
@@ -178,4 +182,54 @@ class SetOperatorsTest extends TableTestBase {
expected
)
}
+
+ @Test
+ def testUnionNullableTypes(): Unit = {
--- End diff --
I think this should also be added to stream API as well but I am not sure
which test category it falls into.
---
