Adding a group count column to a PySpark dataframe

Question

I am coming from R and the tidyverse to PySpark due to its superior Spark handling, and I am struggling to map certain concepts from one context to the other.

In par

Answer 1

as @pault appendix

import pyspark.sql.functions as F

...

(df
.groupBy(F.col('x'))
.agg(F.count('x').alias('n'))
.show())

#+---+---+
#|  x|  n|
#+---+---+
#|  b|  1|
#|  a|  3|
#+---+---+

enjoy