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Posted to dev@hive.apache.org by "Harish Butani (JIRA)" <ji...@apache.org> on 2013/12/12 01:06:07 UTC

[jira] [Created] (HIVE-6013) Supporting Quoted Identifiers in Column Names

Harish Butani created HIVE-6013:
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             Summary: Supporting Quoted Identifiers in Column Names
                 Key: HIVE-6013
                 URL: https://issues.apache.org/jira/browse/HIVE-6013
             Project: Hive
          Issue Type: Improvement
          Components: Query Processor
            Reporter: Harish Butani
         Attachments: QuotedIdentifier.html

Hive's current behavior on Quoted Identifiers is different from the normal interpretation. Quoted Identifier (using backticks) has a special interpretation for Select expressions(as Regular Expressions). Have documented current behavior and proposed a solution in attached doc.

Summary of solution is:
- Introduce 'standard' quoted identifiers for columns only. 
- At the langauage level this is turned on by a flag.
- At the metadata level we relax the constraint on column names.



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