[jira] [Created] (SPARK-23902) Provide an option in months_between UDF to disable rounding-off

["Xiao Li (JIRA)" <ji...@apache.org>]

Xiao Li created SPARK-23902:
-------------------------------

             Summary: Provide an option in months_between UDF to disable rounding-off
                 Key: SPARK-23902
                 URL: https://issues.apache.org/jira/browse/SPARK-23902
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 2.3.0
            Reporter: Xiao Li


https://issues.apache.org/jira/browse/HIVE-15511

{noforrmat}

Rounding off was added in {{GenericUDFMonthsBetween}} so that it can be compatible with systems like oracle. However, there are places where rounding off is not needed.

E.g "CAST(MONTHS_BETWEEN(l_shipdate, l_commitdate) / 12 AS INT)" may not need rounding off via BigDecimal which is compute intensive.

{noformat}



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