How to find the number of elements present in the array in a Spark DataFame column

0 votes
I have a Spark DataFrame, where the second column contains the array of string. How can I write a program to retrieve the number of elements present in each array?
Jun 6, 2018 in Apache Spark by code799
 • 20,816 views

1 answer to this question.

+1 vote

You can select the column and apply size method to find the number of elements present in array:

df.select(size($"col1"))
answered Jun 6, 2018 by Shubham
 • 13,490 points

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