[jira] [Updated] (HIVE-13299) Column Names trimmed of leading and trailing spaces

["Pengcheng Xiong (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-13299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pengcheng Xiong updated HIVE-13299:
-----------------------------------
    Status: Patch Available  (was: Open)

> Column Names trimmed of leading and trailing spaces
> ---------------------------------------------------
>
>                 Key: HIVE-13299
>                 URL: https://issues.apache.org/jira/browse/HIVE-13299
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-13299.01.patch
>
>
> PROBLEM:
> As per the Hive Language DDL: 
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL
> In Hive 0.12 and earlier, only alphanumeric and underscore characters are allowed in table and column names.
> In Hive 0.13 and later, column names can contain any Unicode character (see HIVE-6013). Any column name that is specified within backticks (`) is treated literally.
> However column names
> {code}
> ` left` resulted in `left`
> ` middle ` resulted in `middle`
> `right ` resulted in `right`
> `middle space` resulted in `middle space`
> ` middle space ` resulted in `middle space`
> {code}



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