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Get sum of specific rows in PySpark


How to sum array of numbers in Ruby?Converting a Pandas GroupBy output from Series to DataFrameHow can I replace all the NaN values with Zero's in a column of a pandas dataframeHow to iterate over rows in a DataFrame in Pandas?Select rows from a DataFrame based on values in a column in pandasHow to store a dataframe using PandasDivide Column in Pandas Dataframe by Sum of ColumnPyspark : Cumulative Sum with reset conditionCould not get sum of each row in a column in php mysql tableFill in specific row in pySpark dataframe while adding new columns






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















I have this dataframe



+----+-----+-----+
|Cat |01/02|02/02|......
+----+-----+-----+
| a | 20 | 7 |......
| b | 30 | 12 |......
| c | 10 | 10 |
All| 60 | 29 |......
+----+---+-------+


I want the total to be this sum Total = a +b -c . Right now I am using this script



dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


I tried to calculate the desired outcome by doing this



pr = col("Cat")=='b'
dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c) - when(pr, F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


but I am getting null in the total. Any hints?










share|improve this question






























    0















    I have this dataframe



    +----+-----+-----+
    |Cat |01/02|02/02|......
    +----+-----+-----+
    | a | 20 | 7 |......
    | b | 30 | 12 |......
    | c | 10 | 10 |
    All| 60 | 29 |......
    +----+---+-------+


    I want the total to be this sum Total = a +b -c . Right now I am using this script



    dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


    I tried to calculate the desired outcome by doing this



    pr = col("Cat")=='b'
    dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c) - when(pr, F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


    but I am getting null in the total. Any hints?










    share|improve this question


























      0












      0








      0








      I have this dataframe



      +----+-----+-----+
      |Cat |01/02|02/02|......
      +----+-----+-----+
      | a | 20 | 7 |......
      | b | 30 | 12 |......
      | c | 10 | 10 |
      All| 60 | 29 |......
      +----+---+-------+


      I want the total to be this sum Total = a +b -c . Right now I am using this script



      dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


      I tried to calculate the desired outcome by doing this



      pr = col("Cat")=='b'
      dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c) - when(pr, F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


      but I am getting null in the total. Any hints?










      share|improve this question














      I have this dataframe



      +----+-----+-----+
      |Cat |01/02|02/02|......
      +----+-----+-----+
      | a | 20 | 7 |......
      | b | 30 | 12 |......
      | c | 10 | 10 |
      All| 60 | 29 |......
      +----+---+-------+


      I want the total to be this sum Total = a +b -c . Right now I am using this script



      dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


      I tried to calculate the desired outcome by doing this



      pr = col("Cat")=='b'
      dfFrc = fs.union(fs.select(F.lit("Total").alias("Cat"), *[F.sum(F.col(c) - when(pr, F.col(c)).alias(c) for c in fs.columns if c != 'Cat']))


      but I am getting null in the total. Any hints?







      dataframe pyspark sum






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 27 at 15:29









      Gerasimos Gerasimos

      741 gold badge2 silver badges13 bronze badges




      741 gold badge2 silver badges13 bronze badges

























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