lirui-apache commented on a change in pull request #10625: [FLINK-15259][hive]
HiveInspector.toInspectors() should convert Flink…
URL: https://github.com/apache/flink/pull/10625#discussion_r361935078
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File path:
flink-connectors/flink-connector-hive/src/test/java/org/apache/flink/table/module/hive/HiveModuleTest.java
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@@ -88,4 +94,24 @@ public void testHiveBuiltInFunction() {
public void testNonExistFunction() {
assertFalse(new
HiveModule(HiveShimLoader.getHiveVersion()).getFunctionDefinition("nonexist").isPresent());
}
+
+ @Test
+ public void testConstantArguments() throws Exception {
+ TableEnvironment tEnv =
HiveTestUtils.createTableEnvWithBlinkPlannerBatchMode();
+
+ tEnv.unloadModule("core");
+ tEnv.loadModule("hive", new
HiveModule(HiveShimLoader.getHiveVersion()));
+
+ List<Row> results =
TableUtils.collectToList(tEnv.sqlQuery("select concat('an', 'bn')"));
+ assertEquals("[anbn]", results.toString());
+
+ results = TableUtils.collectToList(tEnv.sqlQuery("select
concat('ab', cast('cdefghi' as varchar(5)))"));
Review comment:
Unfortunately we cannot test `null` literals, because Hive functions
consider nulls as non-constant arguments:
https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/functions/hive/HiveFunction.java#L36
Maybe we should consider all the passed arguments as constant, and don't
pass non-constant arguments in the first place. But that'll need to change the
interface.
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