dianfu commented on a change in pull request #9865: [FLINK-14212][python]
Support no-argument Python UDFs.
URL: https://github.com/apache/flink/pull/9865#discussion_r333361887
##########
File path:
flink-table/flink-table-planner-blink/src/test/scala/org/apache/flink/table/planner/plan/rules/logical/ExpressionReductionRulesTest.scala
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@@ -46,4 +46,21 @@ class ExpressionReductionRulesTest extends TableTestBase {
util.verifyPlan("SELECT myUdf(1) FROM MyTable")
}
+ @Test
+ def testExpressionReductionWithPythonUDF(): Unit = {
+ util.addFunction("PyUdf", MockedPythonScalarFunction)
+ util.addFunction("MyUdf", Func1)
+ util.verifyPlan("SELECT PyUdf(), MyUdf(1) FROM MyTable")
+ }
+}
+
+object MockedPythonScalarFunction extends ScalarFunction {
Review comment:
rename to PythonUDFWithoutArgument?
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