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klotz: aggregation*

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1. Deduplicating and Collapsing Records in Spark DataFrames

   2018-10-18 Tags: spark, collect_list, aggregation, hadoop by klotz
2. scala - Spark Dataframe GroupBy and compute Complex aggregate function - Stack Overflow

   val result = DS1.groupBy("KEY")
   .agg(((sum($"SA").divide(sum(($"SA").divide(($"PCT").divide(100))))) * 100)
   .as("re_pcnt"))

   2018-01-19 Tags: spark, aggregation by klotz

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