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https://issues.apache.org/jira/browse/HIVE-840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771562#action_12771562
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He Yongqiang commented on HIVE-840:
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Thanks, Namit.
You mean the error message ""column alias " + name + " already exists." We
need a parameter 'name' in the error message, so it may not fit in ErrorMsg.
> no error if user specifies multiple columns of same name as output
> ------------------------------------------------------------------
>
> Key: HIVE-840
> URL: https://issues.apache.org/jira/browse/HIVE-840
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: He Yongqiang
> Attachments: hive-840-2009-10-28.patch
>
>
> INSERT OVERWRITE TABLE table_name_here
> SELECT TRANSFORM(key,val)
> USING '/script/'
> AS foo, foo, foo
> The above query should fail, but it succeeds
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