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https://issues.apache.org/jira/browse/SPARK-2036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust resolved SPARK-2036.
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Resolution: Fixed
> CaseConversionExpression should check if the evaluated value is null.
> ---------------------------------------------------------------------
>
> Key: SPARK-2036
> URL: https://issues.apache.org/jira/browse/SPARK-2036
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
>
> {{CaseConversionExpression}} should check if the evaluated value is {{null}}.
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