wuchong commented on a change in pull request #13612:
URL: https://github.com/apache/flink/pull/13612#discussion_r512412637
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/expressions/ScalarOperatorsTest.scala
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@@ -62,6 +62,26 @@ class ScalarOperatorsTest extends ScalarOperatorsTestBase {
)
}
+ @Test
+ def testCast(): Unit = {
+
+ // binary -> varchar
+ testSqlApi(
+ "CAST (f18 as varchar)",
+ "hello world")
+
+ // varbinary -> varchar
+ testSqlApi(
+ "CAST (f19 as varchar)",
+ "hello flink")
+
+ // null case
+ testSqlApi("CAST (NULL AS INT)", "null")
+ testSqlApi(
+ "CAST (NULL AS VARCHAR) = ''",
+ "null")
Review comment:
Would be better to add a test for cast binary literal to varchar.
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