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https://issues.apache.org/jira/browse/HIVE-22292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krisztian Kasa updated HIVE-22292:
----------------------------------
    Status: Patch Available  (was: Open)

> Implement Hypothetical-Set Aggregate Functions
> ----------------------------------------------
>
>                 Key: HIVE-22292
>                 URL: https://issues.apache.org/jira/browse/HIVE-22292
>             Project: Hive
>          Issue Type: Improvement
>          Components: UDF
>            Reporter: Krisztian Kasa
>            Assignee: Krisztian Kasa
>            Priority: Major
>             Fix For: 4.0.0
>
>         Attachments: HIVE-22292.1.patch, HIVE-22292.2.patch
>
>
> {code}
> <hypothetical set function> ::=
>   <rank function type> <left paren>
>   <hypothetical set function value expression list> <right paren>
>   <within group specification>
> <rank function type> ::=
>   RANK
>   | DENSE_RANK
>   | PERCENT_RANK
>   | CUME_DIST
> {code}
> Example:
> {code}
> CREATE TABLE table1 (column1 int);
> INSERT INTO table1 VALUES (NULL), (3), (8), (13), (7), (6), (20), (NULL), 
> (NULL), (10), (7), (15), (16), (8), (7), (8), (NULL);
> {code}
> {code}
> SELECT rank(6) WITHIN GROUP (ORDER BY column1) FROM table1;
> {code}
> {code}
> 2
> {code}



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