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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-10459) Add materialized views to Hive
Date Thu, 23 Apr 2015 04:14:38 GMT
Alan Gates created HIVE-10459:
---------------------------------

             Summary: Add materialized views to Hive
                 Key: HIVE-10459
                 URL: https://issues.apache.org/jira/browse/HIVE-10459
             Project: Hive
          Issue Type: Improvement
            Reporter: Alan Gates
            Assignee: Alan Gates


Materialized views are useful as ways to store either alternate versions of data (e.g. same
data, different sort order) or derivatives of data sets (e.g. commonly used aggregates). 
It is useful to store these as materialized views rather than as tables because it can give
the optimizer the ability to understand how data sets are related.



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