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Posted to dev@hive.apache.org by "David Mollitor (Jira)" <ji...@apache.org> on 2020/04/10 15:03:00 UTC

[jira] [Created] (HIVE-23176) Remove REGEX Column Feature

David Mollitor created HIVE-23176:
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             Summary: Remove REGEX Column Feature
                 Key: HIVE-23176
                 URL: https://issues.apache.org/jira/browse/HIVE-23176
             Project: Hive
          Issue Type: Improvement
            Reporter: David Mollitor


Remove the Hive feature: REGEX Column.

 

Hive has this interesting feature for doing REGEX to SELECT multiple columns.  This needs to go.  It is not SQL standard and as currently implemented, it is impossible to determine if a column identifier is a REGEX or the actual name of the column.  If a column name is enclosed in back ticks then any UTF-8 character is a valid table name.

 

[https://dev.mysql.com/doc/refman/8.0/en/identifiers.html]

[https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Select]



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