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https://issues.apache.org/jira/browse/HIVE-15552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16237979#comment-16237979
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Jesus Camacho Rodriguez commented on HIVE-15552:
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[~ashutoshc], I have regenerated the q files and created a RB in
https://reviews.apache.org/r/63541/ . Thanks
> unable to coalesce DATE and TIMESTAMP types
> -------------------------------------------
>
> Key: HIVE-15552
> URL: https://issues.apache.org/jira/browse/HIVE-15552
> Project: Hive
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: N Campbell
> Assignee: Jesus Camacho Rodriguez
> Priority: Critical
> Labels: timestamp
> Attachments: HIVE-15552.01.patch, HIVE-15552.02.patch,
> HIVE-15552.patch
>
>
> COALESCE expression does not expect DATE and TIMESTAMP types
> select tdt.rnum, coalesce(tdt.cdt, cast(tdt.cdt as timestamp)) from
> certtext.tdt
> Error: Error while compiling statement: FAILED: SemanticException Line 0:-1
> Argument type mismatch 'cdt': The expressions after COALESCE should all have
> the same type: "date" is expected but "timestamp" is found
> SQLState: 42000
> ErrorCode: 40000
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