klotz: scala*

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  1. df.withColumn("rank", rank().over(Window.partitionBy("Dept_id").orderBy($"salary".desc)))
    .filter($"rank" <= 3)
    .drop("rank")
    2019-06-24 Tags: , , , , , by klotz
  2. 2019-05-30 Tags: , by klotz

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