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Posted to issues@spark.apache.org by "liuxian (JIRA)" <ji...@apache.org> on 2017/05/03 06:02:04 UTC

[jira] [Created] (SPARK-20575) As a user,how do I know the return value type(double,bigint etc.) of a function

liuxian created SPARK-20575:
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             Summary: As a user,how do I know the return value type(double,bigint etc.)   of a function
                 Key: SPARK-20575
                 URL: https://issues.apache.org/jira/browse/SPARK-20575
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.1.0
            Reporter: liuxian
            Priority: Minor


In spark-sql,we often use "avg", "round"  etc. functions, when we need to save the results into tables, but i am not sure the   return value type  of these functions,



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