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ASF GitHub Bot logged work on HIVE-25738: ----------------------------------------- Author: ASF GitHub Bot Created on: 30/Nov/21 02:11 Start Date: 30/Nov/21 02:11 Worklog Time Spent: 10m Work Description: dengzhhu653 commented on a change in pull request #2816: URL: https://github.com/apache/hive/pull/2816#discussion_r758876501 ########## File path: ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFNullif.java ########## @@ -86,17 +87,13 @@ public ObjectInspector initialize(ObjectInspector[] arguments) throws UDFArgumen public Object evaluate(DeferredObject[] arguments) throws HiveException { Object arg0 = arguments[0].get(); Object arg1 = arguments[1].get(); - Object value0 = null; - if (arg0 != null) { - value0 = returnOIResolver.convertIfNecessary(arg0, argumentOIs[0], false); - } + Object value0 = returnOIResolver.convertIfNecessary(arg0, argumentOIs[0], false); if (arg0 == null || arg1 == null) { return value0; } - PrimitiveObjectInspector compareOI = (PrimitiveObjectInspector) returnOIResolver.get(); - if (PrimitiveObjectInspectorUtils.comparePrimitiveObjects( - value0, compareOI, - returnOIResolver.convertIfNecessary(arg1, argumentOIs[1], false), compareOI)) { + Object value1 = returnOIResolver.convertIfNecessary(arg1, argumentOIs[1], false); + ObjectInspector compareOI = returnOIResolver.get(); + if (ObjectInspectorUtils.compare(value0, compareOI, value1, compareOI) == 0) { Review comment: I think the result of union is expected, the `idx` in a union implies [which part of the union is being used](https://cwiki.apache.org/confluence/display/hive/languagemanual+types#LanguageManualTypes-UnionTypesunionUnionTypes) , we cannot ignore both the `idx` part in union type. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: gitbox-unsubscr...@hive.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 687717) Time Spent: 1h 20m (was: 1h 10m) > NullIf doesn't support complex types > ------------------------------------ > > Key: HIVE-25738 > URL: https://issues.apache.org/jira/browse/HIVE-25738 > Project: Hive > Issue Type: Improvement > Reporter: Zoltan Haindrich > Priority: Major > Labels: pull-request-available > Time Spent: 1h 20m > Remaining Estimate: 0h > > {code} > SELECT NULLIF(array(1,2,3),array(1,2,3)) > {code} > results in: > {code} > java.lang.ClassCastException: > org.apache.hadoop.hive.serde2.objectinspector.StandardListObjectInspector > cannot be cast to > org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector > at > org.apache.hadoop.hive.ql.udf.generic.GenericUDFNullif.evaluate(GenericUDFNullif.java:96) > at > org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initializeAndFoldConstants(GenericUDF.java:177) > at > org.apache.hadoop.hive.ql.parse.type.HiveFunctionHelper.getReturnType(HiveFunctionHelper.java:135) > at > org.apache.hadoop.hive.ql.parse.type.RexNodeExprFactory.createFuncCallExpr(RexNodeExprFactory.java:647) > [...] > {code} -- This message was sent by Atlassian Jira (v8.20.1#820001)