[teiid-issues] [JBoss JIRA] (TEIID-5447) support for percent_rank, cume_dist, nth_value

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-5447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625390#comment-13625390 ] 

Steven Hawkins commented on TEIID-5447:
---------------------------------------

All of the remaining functions have been committed - however the implementation is based upon the old logic that does not yet support a windowing clause.  That will be added in 11.2 - TEIID-5316

For now the logic uses temporary arrays and secondary computation of the final value using multiple values.  That should change once the logic is refactored to provide the entire window frame to the evaluation of the function.

> support for percent_rank, cume_dist, nth_value
> ----------------------------------------------
>
>                 Key: TEIID-5447
>                 URL: https://issues.jboss.org/browse/TEIID-5447
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>
> Implementations for percent_rank, cume_dist, nth_value will have similar logic to ntile TEIID-5442 so they will be simple to add as well.



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