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https://issues.apache.org/jira/browse/SPARK-19496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15859091#comment-15859091
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Xiao Li commented on SPARK-19496:
---------------------------------
[~cloud_fan] Yeah, null looks better. Illegal inputs should not be silently
accepted and converted.
> 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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