[jira] [Created] (HIVE-15981) Allow empty grouping sets

[Carter Shanklin (JIRA)]

Carter Shanklin created HIVE-15981:
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             Summary: Allow empty grouping sets
                 Key: HIVE-15981
                 URL: https://issues.apache.org/jira/browse/HIVE-15981
             Project: Hive
          Issue Type: Sub-task
            Reporter: Carter Shanklin


group by () should be treated as equivalent to no group by clause. Currently it 
throws a parse error



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