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From "Prasad Chakka (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-460) Improve ColumnPruner to prune more aggressively and keep column information for input tables
Date Sun, 31 May 2009 04:26:07 GMT

    [ https://issues.apache.org/jira/browse/HIVE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714813#action_12714813
] 

Prasad Chakka commented on HIVE-460:
------------------------------------

Can't names be quoted like 'a+b' instead of converting it to a_b? I think MySQL does something
like that (back ticks) and that would eliminate users needing to guess the translation made
by hive.

> Improve ColumnPruner to prune more aggressively and keep column information for input
tables
> --------------------------------------------------------------------------------------------
>
>                 Key: HIVE-460
>                 URL: https://issues.apache.org/jira/browse/HIVE-460
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.4.0
>            Reporter: Zheng Shao
>            Assignee: He Yongqiang
>         Attachments: hive-460-2009-05-29-noaliasallowed.patch, HIVE-460.1.patch
>
>
> This is required for column-based table format.

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