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https://issues.apache.org/jira/browse/SPARK-9168?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davies Liu resolved SPARK-9168.
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Resolution: Fixed
Fix Version/s: 1.5.0
Issue resolved by pull request 7523
[https://github.com/apache/spark/pull/7523]
> Add nanvl expression
> --------------------
>
> Key: SPARK-9168
> URL: https://issues.apache.org/jira/browse/SPARK-9168
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Yijie Shen
> Fix For: 1.5.0
>
>
> Similar to Oracle's nanvl:
> nanvl(v1, v2)
> if v1 is NaN, returns v2; otherwise, returns v1.
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