How to sum the values of one column of a dataframe in spark/scala

Question

I have a Dataframe that I read from a CSV file with many columns like: timestamp, steps, heartrate etc.

I want to sum the values of each column, for instance the tot

Answer 1

Simply apply aggregation function, Sum on your column

df.groupby('steps').sum().show()

Follow the Documentation http://spark.apache.org/docs/2.1.0/api/python/pyspark.sql.html

Check out this link also https://www.analyticsvidhya.com/blog/2016/10/spark-dataframe-and-operations/