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https://issues.apache.org/jira/browse/SPARK-12459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15069904#comment-15069904
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Yin Huai commented on SPARK-12459:
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For base64, maybe using {{_FUNC_(binary)}} will be better? For the extended use
case, maybe {{SELECT FUNC(binary_column)}}? I feel using a string may confuse
people.
> Add ExpressionDescription to string functions
> ---------------------------------------------
>
> Key: SPARK-12459
> URL: https://issues.apache.org/jira/browse/SPARK-12459
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Yin Huai
>
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