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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-460) Improve ColumnPruner to prune more aggressively and keep column information for input tables
Date Thu, 04 Jun 2009 04:02:07 GMT

     [ https://issues.apache.org/jira/browse/HIVE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

He Yongqiang updated HIVE-460:
------------------------------

    Attachment: hive-460-2009-06-04-testcli-passed.patch

hive-460-2009-06-04-testcli-passed.patch now works. The modifications made:
1) added an array of output column names to Operators like select, groupby, join etc
2) removed plan regeneration code in ColumnPruner
3) instead of using integer as column internal names, now use _col1 _col2 etc

> 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-460-2009-06-04-testcli-passed.patch,
HIVE-460.1.patch
>
>
> This is required for column-based table format.

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