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https://issues.apache.org/jira/browse/HIVE-4055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13690975#comment-13690975
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Eric Hanson commented on HIVE-4055:
-----------------------------------

Can you please attach a functional specification to the JIRA, or write the 
documentation and provide a link to the documentation? I'll want to know 
details including the range of legal values, and any rules about casts and 
conversions, to help implement support for DATE with vectorized execution 
(HIVE-4160). Thanks!
                
> add Date data type
> ------------------
>
>                 Key: HIVE-4055
>                 URL: https://issues.apache.org/jira/browse/HIVE-4055
>             Project: Hive
>          Issue Type: Sub-task
>          Components: JDBC, Query Processor, Serializers/Deserializers, UDF
>            Reporter: Sun Rui
>         Attachments: HIVE-4055.1.patch.txt, HIVE-4055.2.patch.txt
>
>
> Add Date data type, a new primitive data type which supports the standard SQL 
> date type.
> Basically, the implementation can take HIVE-2272 and HIVE-2957 as references.

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