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https://issues.apache.org/jira/browse/SPARK-2863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14086298#comment-14086298
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William Benton commented on SPARK-2863:
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I'm working on this; can someone assign it to me?
> Emulate Hive type coercion in native reimplementations of Hive functions
> ------------------------------------------------------------------------
>
> Key: SPARK-2863
> URL: https://issues.apache.org/jira/browse/SPARK-2863
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.0.0
> Reporter: William Benton
>
> Native reimplementations of Hive functions no longer have the same
> type-coercion behavior as they would if executed via Hive. As <a
> href="https://github.com/apache/spark/pull/1750#discussion_r15790970";>
> Michael Armbrust points out</a>, queries like {{SELECT SQRT("2") FROM src
> LIMIT 1}} succeed in Hive but fail if {{SQRT}} is implemented natively.
> Spark SQL should have Hive-compatible type coercions for arguments to
> natively-implemented functions.
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