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https://issues.apache.org/jira/browse/SPARK-31790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17113715#comment-17113715
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Apache Spark commented on SPARK-31790:
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User 'GuoPhilipse' has created a pull request for this issue:
https://github.com/apache/spark/pull/28605

> cast scenarios may generate different results between  Hive and Spark
> ---------------------------------------------------------------------
>
>                 Key: SPARK-31790
>                 URL: https://issues.apache.org/jira/browse/SPARK-31790
>             Project: Spark
>          Issue Type: Documentation
>          Components: Documentation
>    Affects Versions: 2.4.5
>            Reporter: philipse
>            Priority: Minor
>
> `CAST(n,TIMESTAMPTYPE)` If n is Byte/Short/Int/Long data type, Hive treat n 
> as milliseconds unit , while Spark SQL as seconds unit. so the cast result is 
> different,please be care when you use it



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