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      	@Test
      	public void testCastRowTableFunction() throws Exception {
      		final List<Row> sourceData = Arrays.asList(
      			Row.of(Row.of(1))
      		);
      
      		final List<Row> sinkData = Arrays.asList(
      			Row.of(Row.of(new BigDecimal("1")))
      		);
      
      		TestCollectionTableFactory.reset();
      		TestCollectionTableFactory.initData(sourceData);
      
      		tEnv().sqlUpdate("CREATE TABLE SourceTable(s Row(a INT)) WITH ('connector' = 'COLLECTION')");
      		tEnv().sqlUpdate("CREATE TABLE SinkTable(s ROW(a DECIMAL(10, 2))) WITH ('connector' = 'COLLECTION')");
      
      		tEnv().createTemporarySystemFunction("func", RowCastScalarFunction.class);
      		tEnv().sqlUpdate("INSERT INTO SinkTable SELECT func(s) FROM SourceTable");
      		tEnv().execute("Test Job");
      
      		assertThat(TestCollectionTableFactory.getResult(), equalTo(sinkData));
      	}
      
      	public static class RowCastScalarFunction extends ScalarFunction {
      		public @DataTypeHint("ROW<f0 INT>") Row eval(
      			@DataTypeHint("ROW<f0 DECIMAL(10, 2)>") Row row) {
      			return Row.of(1);
      		}
      	}
      

      fails with:

      java.lang.AssertionError: use createStructType() instead
      
      	at org.apache.calcite.sql.type.SqlTypeFactoryImpl.assertBasic(SqlTypeFactoryImpl.java:225)
      	at org.apache.calcite.sql.type.SqlTypeFactoryImpl.createSqlType(SqlTypeFactoryImpl.java:48)
      	at org.apache.flink.table.planner.calcite.FlinkTypeFactory.createSqlType(FlinkTypeFactory.scala:275)
      	at org.apache.calcite.sql.SqlBasicTypeNameSpec.deriveType(SqlBasicTypeNameSpec.java:205)
      	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:222)
      	at org.apache.calcite.sql.SqlDataTypeSpec.deriveType(SqlDataTypeSpec.java:209)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5960)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:5845)
      	at org.apache.calcite.sql.SqlDataTypeSpec.accept(SqlDataTypeSpec.java:186)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1800)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1785)
      	at org.apache.calcite.sql.SqlNode.validateExpr(SqlNode.java:260)
      	at org.apache.calcite.sql.SqlOperator.validateCall(SqlOperator.java:423)
      	at org.apache.calcite.sql.SqlFunction.validateCall(SqlFunction.java:199)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateCall(SqlValidatorImpl.java:5552)
      	at org.apache.calcite.sql.SqlCall.validate(SqlCall.java:116)
      	at org.apache.calcite.sql.SqlNode.validateExpr(SqlNode.java:259)
      	at org.apache.calcite.sql.SqlOperator.validateCall(SqlOperator.java:423)
      	at org.apache.calcite.sql.SqlFunction.validateCall(SqlFunction.java:199)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateCall(SqlValidatorImpl.java:5552)
      	at org.apache.calcite.sql.SqlCall.validate(SqlCall.java:116)
      	at org.apache.calcite.sql.SqlNode.validateExpr(SqlNode.java:259)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateExpr(SqlValidatorImpl.java:4306)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4284)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3523)
      	at org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:60)
      	at org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:84)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1110)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1084)
      	at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:232)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1059)
      	at org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:766)
      	at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.org$apache$flink$table$planner$calcite$FlinkPlannerImpl$$validate(FlinkPlannerImpl.scala:128)
      	at org.apache.flink.table.planner.calcite.FlinkPlannerImpl.validate(FlinkPlannerImpl.scala:107)
      	at org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:134)
      	at org.apache.flink.table.planner.operations.SqlToOperationConverter.convertSqlInsert(SqlToOperationConverter.java:351)
      	at org.apache.flink.table.planner.operations.SqlToOperationConverter.convert(SqlToOperationConverter.java:149)
      	at org.apache.flink.table.planner.delegation.ParserImpl.parse(ParserImpl.java:66)
      	at org.apache.flink.table.api.internal.TableEnvironmentImpl.sqlUpdate(TableEnvironmentImpl.java:596)
      	at org.apache.flink.table.planner.runtime.stream.sql.FunctionITCase.testCastRowTableFunction(FunctionITCase.java:632)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:498)
      	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
      	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
      	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
      	at org.junit.rules.ExpectedException$ExpectedExceptionStatement.evaluate(ExpectedException.java:239)
      	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
      	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
      	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
      	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
      	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
      	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
      	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
      	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
      	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
      	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
      	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
      	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
      	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
      	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
      	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
      	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
      	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
      	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:498)
      	at com.intellij.rt.execution.application.AppMainV2.main(AppMainV2.java:131)
      

      I think the problem is in org.apache.flink.table.planner.functions.inference.TypeInferenceOperandChecker#castTo

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              • Assignee:
                twalthr Timo Walther
                Reporter:
                dwysakowicz Dawid Wysakowicz
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                • Created:
                  Updated:
                  Resolved: