Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3715#discussion_r125464505
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/scala/stream/sql/JoinTest.scala
---
@@ -67,27 +66,47 @@ class JoinTest extends TableTestBase {
streamUtil.verifySql(sqlQuery, expected)
}
+ @Test(expected = classOf[TableException])
--- End diff --
Please add a brief comment why the query is expected to fail.
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