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Posted to dev@hive.apache.org by "Alan Gates (JIRA)" <ji...@apache.org> on 2015/04/23 06:14:38 UTC

[jira] [Created] (HIVE-10459) Add materialized views to Hive

Alan Gates created HIVE-10459:
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             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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