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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4209) Cache evaluation result of deterministic expression and reuse it
Date Thu, 21 Mar 2013 05:25:15 GMT
Navis created HIVE-4209:
---------------------------

             Summary: Cache evaluation result of deterministic expression and reuse it
                 Key: HIVE-4209
                 URL: https://issues.apache.org/jira/browse/HIVE-4209
             Project: Hive
          Issue Type: Improvement
          Components: Query Processor
            Reporter: Navis
            Assignee: Navis
            Priority: Minor


For example, 
{noformat}
select key from src where key + 1 > 100 AND key + 1 < 200 limit 3;
{noformat}

key + 1 need not to be evaluated twice.

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