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

["Marco Gaido (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-23902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16430214#comment-16430214 ] 

Marco Gaido commented on SPARK-23902:
-------------------------------------

I will work on this, thanks.

> 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
>            Priority: Major
>
> https://issues.apache.org/jira/browse/HIVE-15511
> {noformat}
> 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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