[jira] [Created] (SPARK-12797) Aggregation without grouping keys

[Davies Liu (JIRA)]

Davies Liu created SPARK-12797:
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             Summary: Aggregation without grouping keys
                 Key: SPARK-12797
                 URL: https://issues.apache.org/jira/browse/SPARK-12797
             Project: Spark
          Issue Type: New Feature
            Reporter: Davies Liu






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