[jira] [Commented] (SPARK-40164) The partitionSpec should be distinct keys after filter one row of row_number

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-40164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17582568#comment-17582568 ] 

Apache Spark commented on SPARK-40164:
--------------------------------------

User 'wankunde' has created a pull request for this issue:
https://github.com/apache/spark/pull/37602

> The partitionSpec should be distinct keys after filter one row of row_number
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-40164
>                 URL: https://issues.apache.org/jira/browse/SPARK-40164
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Wan Kun
>            Priority: Minor
>
> For query
> {code:sql}
> SELECT *
>   FROM (
>     SELECT *, row_number() over(partition by key order by value) rn
>     FROM testData t
>   ) t1
>   WHERE rn=1
> {code}
> column *key* will be distinct 



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