[jira] [Created] (SPARK-13559) Migrate common GroupedDataset aggregations

["Cheng Lian (JIRA)" <ji...@apache.org>]

Cheng Lian created SPARK-13559:
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             Summary: Migrate common GroupedDataset aggregations
                 Key: SPARK-13559
                 URL: https://issues.apache.org/jira/browse/SPARK-13559
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Cheng Lian
            Assignee: Cheng Lian


Should migrate the following methods and corresponding tests to Dataset:

{noformat}
- Aggregations

  - GroupedDataset

    - Common untyped aggregations

      - mean(String*): Dataset[Row]
      - max(String*): Dataset[Row]
      - avg(String*): Dataset[Row]
      - min(String*): Dataset[Row]
      - sum(String*): Dataset[Row]

    - Common typed aggregations

      - count(): Dataset[(K, Long)]
{noformat}




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