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Posted to dev@hive.apache.org by "Harish Butani (JIRA)" <ji...@apache.org> on 2014/09/16 23:14:34 UTC
[jira] [Resolved] (HIVE-8145) CBO: bail from Optiq planning if a
Select list contains multiple references to the same name
[ https://issues.apache.org/jira/browse/HIVE-8145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harish Butani resolved HIVE-8145.
---------------------------------
Resolution: Fixed
Committed to CBO branch. Thanks for reviewing [~ashutoshc]
> CBO: bail from Optiq planning if a Select list contains multiple references to the same name
> --------------------------------------------------------------------------------------------
>
> Key: HIVE-8145
> URL: https://issues.apache.org/jira/browse/HIVE-8145
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Harish Butani
> Assignee: Harish Butani
> Attachments: HIVE-8145.1.patch
>
>
> Optiq explicitly disallows this:
> {code}
> select x, x from t1
> {code}
> This is allowed in Hive (and also in mysql). Will check in Postgres. For now bailing from Optiq planning if we see this. Will file an Optiq issue.
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