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https://issues.apache.org/jira/browse/SPARK-11490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14988362#comment-14988362
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Apache Spark commented on SPARK-11490:
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User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/9449
> variance should alias var_samp instead of var_pop
> -------------------------------------------------
>
> Key: SPARK-11490
> URL: https://issues.apache.org/jira/browse/SPARK-11490
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
>
> stddev is an alias for stddev_samp. variance should be consistent.
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