pnowojski commented on a change in pull request #6574: [FLINK-8868] [table]
Support Table Function as Table Source for Stream Sql
URL: https://github.com/apache/flink/pull/6574#discussion_r211247170
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File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/runtime/stream/sql/SqlITCase.scala
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@@ -897,6 +897,45 @@ class SqlITCase extends StreamingWithStateTestBase {
assertEquals(List(expected.toString()), StreamITCase.testResults.sorted)
}
+
+ @Test
+ def tableFunctionAsSource(): Unit = {
+ val env = StreamExecutionEnvironment.getExecutionEnvironment
+ val tEnv = TableEnvironment.getTableEnvironment(env)
+ StreamITCase.clear
+ tEnv.registerFunction("udtf", new
JavaUserDefinedTableFunctions.JavaVarsArgTableFunc0)
+ val sql = "select a from LATERAL Table(udtf(3, 'hello')) as T(a)"
+ val result = tEnv.sqlQuery(sql).toAppendStream[Row]
+ result.addSink(new StreamITCase.StringSink[Row])
+ env.execute()
+ assertEquals(List("hello", "hello", "hello"),
StreamITCase.testResults.sorted)
+ }
+
+ @Test
+ def tableFunctionAsSourceWithRowType(): Unit = {
+ val env = StreamExecutionEnvironment.getExecutionEnvironment
+ val tEnv = TableEnvironment.getTableEnvironment(env)
+ StreamITCase.clear
+ tEnv.registerFunction("udtf", new TableFunc2WithBase)
Review comment:
Do we need this `TableFunc2WithBase` here? Couldn't we use `TableFunc2`?
What does `TableFunc2WithBase` give us?
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