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Posted to issues@spark.apache.org by "Martin Grund (Jira)" <ji...@apache.org> on 2022/11/28 07:46:00 UTC

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

Martin Grund created SPARK-41292:
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             Summary: 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


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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