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https://issues.apache.org/jira/browse/HIVE-18711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Miklos Gergely resolved HIVE-18711.
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Resolution: Duplicate
> Add percentile_cont and percentile_disc udaf
> --------------------------------------------
>
> Key: HIVE-18711
> URL: https://issues.apache.org/jira/browse/HIVE-18711
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Reporter: Ashutosh Chauhan
> Assignee: Miklos Gergely
> Priority: Major
>
> Most common way to implement this is via ordered aggregate which allows users
> to specify sort specification with group by clause. Some implementations also
> allow to use these with window functions.
> Since Hive doesn't have concept of ordered aggregates yet, one possibility is
> to support these only for window functions where sort specification is also
> taken from window clause.
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