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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/12/21 04:28:00 UTC

[jira] [Assigned] (SPARK-41292) Window-function support

     [ https://issues.apache.org/jira/browse/SPARK-41292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-41292:
------------------------------------

    Assignee:     (was: Apache Spark)

> Window-function support
> -----------------------
>
>                 Key: SPARK-41292
>                 URL: https://issues.apache.org/jira/browse/SPARK-41292
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Connect
>    Affects Versions: 3.4.0
>            Reporter: Martin Grund
>            Priority: Blocker
>
> For compatibility, we need support for expressing window functions. Window functions are different from regular unresolved expressions as they need a window spec and are generally treated more like aggregate functions.
> Part of this task is to identify if we can fully express the logic of window functions using unresolved functions with expression arguments that represent the window spec.
> Only once this validation is done, we should consider adding a new plan operator / expression type.



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