Dropping multiple columns from Spark dataframe by Iterating through the columns from a Scala List of Column names

Question

I have a dataframe which has columns around 400, I want to drop 100 columns as per my requirement. So i have created a Scala List of 100 column names. And then i want to ite

Answer 1

This should work fine :

val dropList : List[String]  |
val df : DataFrame  |
val test_df = df.drop(dropList : _*)