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https://issues.apache.org/jira/browse/HIVE-5191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810883#comment-13810883
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Ashutosh Chauhan commented on HIVE-5191:
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Max length currently is 255. Seems like different DBs use different max sizes. 
Mysql : 255. Postgres: 1GB, MS SQL Server : 8K. Seems like a lot of variation. 
It will be good to check if standard says something about this. For us, picking 
higher value shouldn't matter, so in case standard is lax, we may want to pick 
higher value.

> Add char data type
> ------------------
>
>                 Key: HIVE-5191
>                 URL: https://issues.apache.org/jira/browse/HIVE-5191
>             Project: Hive
>          Issue Type: New Feature
>          Components: Types
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>         Attachments: HIVE-5191.1.patch, HIVE-5191.2.patch, HIVE-5191.3.patch
>
>
> Separate task for char type, since HIVE-4844 only adds varchar



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