wuchong commented on a change in pull request #11021:
[FLINK-15546][table-planner-blink] Fix obscure error message from Sca…
URL: https://github.com/apache/flink/pull/11021#discussion_r376230408
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/expressions/RowTypeTest.scala
##########
@@ -129,4 +128,17 @@ class RowTypeTest extends RowTypeTestBase {
"null"
)
}
+
+ @Test
+ def testUnsupportedCast(): Unit = {
+ expectedException.expect(classOf[ValidationException])
+ expectedException.expectMessage(
+ "Unsupported cast from Row(f0: String, f1: Boolean) to Long")
+
+ testTableApi(
+ 'f5.cast(DataTypes.BIGINT()),
Review comment:
This test case can't reproduce the problem which reported by this issue. You
should add a test case which cast a ROW to another ROW, e.g.
```scala
testSqlApi("CAST(f5 AS ROW<f0 INT, f1 STRING>)", "")
```
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