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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2019/04/19 00:02:00 UTC

[jira] [Work started] (HIVE-21634) Materialized view rewriting over aggregate operators containing with grouping sets

     [ https://issues.apache.org/jira/browse/HIVE-21634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-21634 started by Jesus Camacho Rodriguez.
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> Materialized view rewriting over aggregate operators containing with grouping sets
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-21634
>                 URL: https://issues.apache.org/jira/browse/HIVE-21634
>             Project: Hive
>          Issue Type: Improvement
>          Components: Materialized views
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>
> A possible approach to support rewriting queries with an aggregate with grouping sets is implementing a rule that splits the aggregate in the query into an aggregate without grouping sets (bottom) and an aggregate with grouping sets (top). Then the materialized view rewriting rule will trigger on the former.



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