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https://issues.apache.org/jira/browse/HIVE-10276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486698#comment-14486698
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Alexander Pivovarov commented on HIVE-10276:
--------------------------------------------
{code}
dayname(date)
// can be replaced with
to_char(date, 'EEEE')
{code}
In the case when 3 chars day name needed 'EEE' fmt can be used.
> Implement to_char(timestamp, fmt) UDF
> -------------------------------------
>
> Key: HIVE-10276
> URL: https://issues.apache.org/jira/browse/HIVE-10276
> Project: Hive
> Issue Type: Improvement
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
>
> to_char(date/timestamp/string, fmt) converts a date/timestamp/string to a
> value of String in the format specified by the java date format fmt.
> Supported formats listed here:
> https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html
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