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https://issues.apache.org/jira/browse/HIVE-5784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harish Butani resolved HIVE-5784.
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Resolution: Duplicate
duplicate of HIVE-3107
> Group By Operator doesn't carry forward table aliases in its RowResolver
> ------------------------------------------------------------------------
>
> Key: HIVE-5784
> URL: https://issues.apache.org/jira/browse/HIVE-5784
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Harish Butani
> Assignee: Harish Butani
> Attachments: HIVE-5784.1.patch
>
>
> The following queries fails:
> {code}
> select b.key, count(*) from src b group by key
> select key, count(*) from src b group by b.key
> {code}
> with a SemanticException; the select expression b.key (key in the 2nd query)
> are not resolved by the GBy RowResolver.
> This is because the GBy RowResolver only supports resolving based on an
> AST.toStringTree match. Underlying issue is that a RowResolver doesn't allow
> multiple mappings to the same ColumnInfo.
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