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From "Apache Spark (Jira)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-27951) ANSI SQL: NTH_VALUE function
Date Sun, 31 May 2020 08:09:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-27951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17120447#comment-17120447
] 

Apache Spark commented on SPARK-27951:
--------------------------------------

User 'beliefer' has created a pull request for this issue:
https://github.com/apache/spark/pull/28685

> ANSI SQL: NTH_VALUE function
> ----------------------------
>
>                 Key: SPARK-27951
>                 URL: https://issues.apache.org/jira/browse/SPARK-27951
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Zhu, Lipeng
>            Priority: Major
>
> |{{nth_value({{value}}{{any}}, {{nth}}{{integer}})}}|{{same type as }}{{value}}|returns {{value}} evaluated
at the row that is the {{nth}} row of the window frame (counting from 1); null if no such
row|
> [https://www.postgresql.org/docs/8.4/functions-window.html]



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