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https://issues.apache.org/jira/browse/HIVE-16751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083022#comment-16083022
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Lefty Leverenz commented on HIVE-16751:
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Okay, thanks Jesús.
> Support different types for grouping columns in GroupBy Druid queries
> ---------------------------------------------------------------------
>
> Key: HIVE-16751
> URL: https://issues.apache.org/jira/browse/HIVE-16751
> Project: Hive
> Issue Type: Bug
> Components: Druid integration
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 3.0.0
>
> Attachments: HIVE-16751.patch
>
>
> Calcite 1.13 pushes EXTRACT and FLOOR function to Druid as an extraction
> function (cf CALCITE-1758). Originally, we were assuming that all group by
> columns in a druid query were of STRING type; however, this will not true
> anymore (result of EXTRACT is an INT and result of FLOOR a TIMESTAMP).
> When we upgrade to Calcite 1.13, we will need to extend the DruidSerDe to
> handle these functions.
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