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- PySpark - Sum a column in dataframe and return results as int
The only reason I chose this over the accepted answer is I am new to pyspark and was confused that the 'Number' column was not explicitly summed in the accepted answer If I had to come back after sometime and try to understand what was happening, syntax such as below would be easier for me to follow
- PySpark: How to Append Dataframes in For Loop - Stack Overflow
You should add, in your answer, the lines from functools import reduce from pyspark sql import DataFrame So people don't have to look further up – Laurent Commented Dec 2, 2021 at 13:09
- check for duplicates in Pyspark Dataframe - Stack Overflow
Remove duplicates from PySpark array column by checking each element 4 Find columns that are exact duplicates (i e , that contain duplicate values across all rows) in PySpark dataframe
- How to delete columns in pyspark dataframe - Stack Overflow
Pyspark Documentation - Drop Share Improve this answer Follow edited Oct 31, 2021 at 3: 55 qwr 11 3k
- How to find count of Null and Nan values for each column in a PySpark . . .
here's a method that avoids any pitfalls with isnan or isNull and works with any datatype # spark is a pyspark sql SparkSession object def count_nulls(df: ): cache = df cache() row_count = cache count() return spark createDataFrame( [[row_count - cache select(col_name) na drop() count() for col_name in cache columns]], # schema=[(col_name, 'integer') for col_name in cache columns] schema=cache
- apache spark - pyspark join multiple conditions - Stack Overflow
How I can specify lot of conditions in pyspark when I use join() Example : with hive : query= "select a NUMCNT,b NUMCNT as RNUMCNT ,a POLE,b POLE as RPOLE,a ACTIVITE,b ACTIVITE as RACTIVITE FROM rapexp201412 b \ join rapexp201412 a where (a NUMCNT=b NUMCNT and a ACTIVITE = b ACTIVITE and a POLE =b POLE )\
- pyspark dataframe filter or include based on list
I am trying to filter a dataframe in pyspark using a list I want to either filter based on the list or include only those records with a value in the list My code below does not work: # define a
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