Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4830#discussion_r144809617
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/stream/table/CorrelateTest.scala
---
@@ -99,6 +104,21 @@ class CorrelateTest extends TableTestBase {
util.verifyTable(result, expected)
}
+ /**
+ * Due to the improper translation of TableFunction left outer join
(see CALCITE-2004), we could
+ * only accept local join predicates on the left table.
+ */
+ @Test (expected = classOf[TableException])
+ def testLeftOuterJoinWithPredicates(): Unit = {
+ val util = streamTestUtil()
+ val table = util.addTable[(Int, Long, String)]("MyTable", 'a, 'b, 'c)
+ val function = util.addFunction("func1", new TableFunc1)
+
+ val result = table.leftOuterJoin(function('c) as 's).select('c,
's).where('c === 's)// forbidden
--- End diff --
This case is OK.
---
