[jira] [Commented] (SPARK-19496) to_date with format has weird behavior

["Song Jun (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-19496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15856205#comment-15856205 ] 

Song Jun commented on SPARK-19496:
----------------------------------

I am working on this~

> to_date with format has weird behavior
> --------------------------------------
>
>                 Key: SPARK-19496
>                 URL: https://issues.apache.org/jira/browse/SPARK-19496
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.1.0
>            Reporter: Wenchen Fan
>
> Today, if we run
> {code}
> SELECT to_date('2015-07-22', 'yyyy-dd-MM')
> {code}
> will result to `2016-10-07`, while running
> {code}
> SELECT to_date('2014-31-12')   # default format
> {code}
> will return null.
> this behavior is weird and we should check other systems like hive to see if this is expected.



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