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https://issues.apache.org/jira/browse/SPARK-43815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17726704#comment-17726704
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Max Gekk commented on SPARK-43815:
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[~ryu796] Let's focus on the first item, and create separate JIRAs for other
items.
> Add SQL functions to_varchar and extend to_char functionality
> -------------------------------------------------------------
>
> Key: SPARK-43815
> URL: https://issues.apache.org/jira/browse/SPARK-43815
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 3.4.1
> Reporter: Richard Yu
> Priority: Major
>
> We want to add support for the follow functions:
> * to_varchar() as an alias for to_char()
> * Expand to_char() to take date, timestamp and binary expression as the
> first argument. For date and timestamp expression, the function will be
> equivalent to date_format(expr, fmt) . For binary expression, the function
> will be equivalent to base64() , hex(), and decode(<expr>, 'UTF-8') for fmt
> base64, hex, and UTF-8 respectively.
> * timediff() as an alias for timestampdiff()
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