Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4404#discussion_r130859046
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/batch/sql/SetOperatorsITCase.scala
---
@@ -260,4 +260,108 @@ class SetOperatorsITCase(
val results = result.toDataSet[Row].collect()
TestBaseUtils.compareResultAsText(results.asJava, expected)
}
+
+ @Test
+ def testInWithFilter(): Unit = {
--- End diff --
Should we validate the feature with plan tests (`TableTestBase`) rather
than runtime tests?
The feature does not require new operators, just expressions which are
tested by dedicated tests and joins which are also tested.
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