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Posted to dev@calcite.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2017/05/18 07:26:04 UTC

[jira] [Created] (CALCITE-1795) Extend materialized view rewriting to produce rewritings using Union operators

Jesus Camacho Rodriguez created CALCITE-1795:
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             Summary: Extend materialized view rewriting to produce rewritings using Union operators
                 Key: CALCITE-1795
                 URL: https://issues.apache.org/jira/browse/CALCITE-1795
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez
             Fix For: 1.13.0


Extend join/aggregate materialized rewriting rule to produce rewritings using Union operators, e.g., a given query could be partially answered from the MV (year = 2014) and from the query (not(year=2014)). If the MV is stored e.g. in Druid, this rewriting might be beneficial. As with the other rewritings, decision on whether to finally use the rewriting is cost-based.



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