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https://issues.apache.org/jira/browse/HIVE-460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715667#action_12715667
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Prasad Chakka commented on HIVE-460:
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then why not use 'a+b' for display and internal names _0 etc in type defs and
thrift DDLs. You can add displayName field to exprNodeDesc and use that field
instead of column name while printing out the expression.
IMO, using translated column names instead of position names actually be more
confusing if two expressions are similar.
> 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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