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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2016/07/15 17:34:20 UTC

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

     [ https://issues.apache.org/jira/browse/HIVE-10459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez updated HIVE-10459:
-------------------------------------------
    Issue Type: New Feature  (was: Improvement)

> Add materialized views to Hive
> ------------------------------
>
>                 Key: HIVE-10459
>                 URL: https://issues.apache.org/jira/browse/HIVE-10459
>             Project: Hive
>          Issue Type: New Feature
>          Components: Views
>            Reporter: Alan Gates
>            Assignee: Julian Hyde
>         Attachments: HIVE-10459.patch
>
>
> 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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