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https://issues.apache.org/jira/browse/HIVE-420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zheng Shao updated HIVE-420:
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Attachment: HIVE-420.3.patch
Fixed another bug: in the last patch, normal columns names are also considered
regex, and ambiguous join columns will become 2 columns instead of reporting an
ambiguous error. This patch fixes this problem. We do regex matching if and
only if the column name contains special characters.
> Support regular expressions for column in select clause
> -------------------------------------------------------
>
> Key: HIVE-420
> URL: https://issues.apache.org/jira/browse/HIVE-420
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Affects Versions: 0.2.0, 0.3.0, 0.3.1, 0.4.0
> Reporter: Prasad Chakka
> Assignee: Zheng Shao
> Priority: Minor
> Attachments: HIVE-420.1.patch, HIVE-420.2.patch, HIVE-420.3.patch
>
>
> support queries like `select a.[^ds] from a where a.ds='2009-09-09'` which
> are useful when there are humongous number of columns in a table and want to
> select all columns except the partitions columns.
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