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https://issues.apache.org/jira/browse/SPARK-27429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821763#comment-16821763
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Liang-Chi Hsieh commented on SPARK-27429:
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Generally I think you can always know which are the values that can't be cast
when to_timestamp results to null on them. I don't think a behavior like
throwing exception is more making sense here.
> [SQL] to_timestamp function with additional argument flag that will allow
> exception if value could not be cast
> --------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-27429
> URL: https://issues.apache.org/jira/browse/SPARK-27429
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.1
> Reporter: t oo
> Priority: Major
>
> If I am running a SQL on a csv based dataframe and my query has
> to_timestamp(input_col,'yyyy-MM-dd HH:mm:ss'), if the values in input_col are
> not really timestamp like 'ABC' then I would like to_timestamp function to
> throw an exception rather than happily (silently) return the values as null.
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