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  1. Spark
  2. SPARK-34775

Push down limit through window when partitionSpec is not empty

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Details

    • Improvement
    • Status: In Progress
    • Major
    • Resolution: Unresolved
    • 3.2.0
    • None
    • SQL
    • None

    Description

      For example:

      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

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            Unassigned Unassigned
            yumwang Yuming Wang
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            Dates

              Created:
              Updated: