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https://issues.apache.org/jira/browse/SPARK-20752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018624#comment-16018624
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Kazuaki Ishizaki commented on SPARK-20752:
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[~smilegator] Can I confirm this JIRA?
According to (this
code|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L528-L535),
{{SQRT}} is already implemented. Do you want to implement another function
that returns {{<expression> ^ 2}}?
> Build-in SQL Function Support - SQRT
> ------------------------------------
>
> Key: SPARK-20752
> URL: https://issues.apache.org/jira/browse/SPARK-20752
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Xiao Li
> Labels: starter
>
> {noformat}
> SQRT(<numeric expression>)
> {noformat}
> Returns Power(<numeric expression>, 2)
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