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https://issues.apache.org/jira/browse/SPARK-12139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16014982#comment-16014982
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Apache Spark commented on SPARK-12139:
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User 'janewangfb' has created a pull request for this issue:
https://github.com/apache/spark/pull/18023
> REGEX Column Specification for Hive Queries
> -------------------------------------------
>
> Key: SPARK-12139
> URL: https://issues.apache.org/jira/browse/SPARK-12139
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Reporter: Derek Sabry
> Priority: Minor
>
> When executing a query of the form
> Select `(a)?\+.\+` from A,
> Hive would interpret this query as a regular expression, which can be
> supported in the hive parser for spark
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