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https://issues.apache.org/jira/browse/HIVE-1947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475691#comment-16475691
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David Zanter commented on HIVE-1947:
------------------------------------
FYI: This looks to be working now starting with Hortonworks v3.0/Hive v3.0
> ORDER BY should support column position expressions
> ---------------------------------------------------
>
> Key: HIVE-1947
> URL: https://issues.apache.org/jira/browse/HIVE-1947
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Carl Steinbach
> Priority: Major
>
> The ORDER BY clause does not support column position expresssions, e.g:
> {code}
> hive> select a.category_desc from lu_category a join lu_subcateg b on
> a.category_id=b.category_id order by 1;
>
> FAILED: Hive Internal Error: java.lang.NullPointerException(null)
>
> java.lang.NullPointerException
>
> at
> org.apache.hadoop.hive.ql.optimizer.ReduceSinkDeDuplication$ReduceSinkDeduplicateProcFactory
> $ReducerReducerProc.getPartitionAndKeyColumnMapping(ReduceSinkDeDuplication.java:406)
>
> at
> org.apache.hadoop.hive.ql.optimizer.ReduceSinkDeDuplication$ReduceSinkDeduplicateProcFactory
> $ReducerReducerProc.process(ReduceSinkDeDuplication.java:157)
> at
> org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:89)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:88)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:128)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:102)
> at
> org.apache.hadoop.hive.ql.optimizer.ReduceSinkDeDuplication.transform(ReduceSinkDeDuplication.java:88)
> at
> org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:83)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:6124)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:125)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:304)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:379)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:138)
> at
> org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:197)
> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:302)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> {code}
>
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