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From "Carl Steinbach (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2909) SHOW COLUMNS table_name; to provide a comma-delimited list of columns.
Date Fri, 06 Apr 2012 00:24:23 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247891#comment-13247891
] 

Carl Steinbach commented on HIVE-2909:
--------------------------------------

MySQL has a SHOW COLUMNS command: http://dev.mysql.com/doc/refman/5.0/en/show-columns.html

Seems like we should follow convention and try to duplicate that instead of inventing our
own behavior. Also, I think returning each column name in a separate row is much more convenient
(and consistent) for clients than forcing them to tokenize the names by splitting on ','
                
> SHOW COLUMNS table_name; to provide a comma-delimited list of columns.
> ----------------------------------------------------------------------
>
>                 Key: HIVE-2909
>                 URL: https://issues.apache.org/jira/browse/HIVE-2909
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Adam Kramer
>            Assignee: Dikang Gu
>            Priority: Minor
>         Attachments: HIVE-2909.D2595.1.patch, HIVE-2909.D2595.2.patch, HIVE-2909.D2595.3.patch,
HIVE-2909.D2595.4.patch
>
>
> Due to the way that SELECT * and partitioning works, it is frequently obnoxious to insert
data into tables of the same schema.
> This could be fixed in a number of ways, all murky; this feature request reduces the
obnoxicity of the current situation.
> SHOW COLUMNS foo;
> OK
> bar, baz, tball, ds
> ...then I could just copy the first three and not the last.

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