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Ashutosh Chauhan commented on HIVE-3426: ---------------------------------------- What Zhenxiao is proposing a good first step. Lets try to optimize that query first and worry about GBY in subquery later. > union with same source should be optimized > ------------------------------------------ > > Key: HIVE-3426 > URL: https://issues.apache.org/jira/browse/HIVE-3426 > Project: Hive > Issue Type: Improvement > Components: Query Processor > Reporter: Namit Jain > Assignee: Zhenxiao Luo > -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira