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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-11937) Improve StatsOptimizer to deal with query with additional constant columns
Date Wed, 23 Sep 2015 17:48:04 GMT
Pengcheng Xiong created HIVE-11937:
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             Summary: Improve StatsOptimizer to deal with query with additional constant columns
                 Key: HIVE-11937
                 URL: https://issues.apache.org/jira/browse/HIVE-11937
             Project: Hive
          Issue Type: Improvement
            Reporter: Pengcheng Xiong
            Assignee: Pengcheng Xiong


Right now StatsOptimizer can deal with query such as "select count(1) from src" by directly
looking into the metastore. However, it can not deal with "select '1' as one, count(1) from
src" which has an additional constant column. We may improve it.



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