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https://issues.apache.org/jira/browse/SPARK-34775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17305151#comment-17305151
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Apache Spark commented on SPARK-34775:
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User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/31904
> Push down limit through window when partitionSpec is not empty
> --------------------------------------------------------------
>
> Key: SPARK-34775
> URL: https://issues.apache.org/jira/browse/SPARK-34775
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Yuming Wang
> Priority: Major
>
> For example:
> {code:sql}
> SELECT *, ROW_NUMBER() OVER(PARTITION BY a ORDER BY b) AS rn FROM t LIMIT 10
> ==>
> SELECT *, ROW_NUMBER() OVER(PARTITION BY a ORDER BY b) AS rn FROM (SELECT *
> FROM t ORDER BY a, b LIMIT 10) tmp
> {code}
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