Programatically selecting multiple columns in scala spark

Question

I am progrmatically trying to form a dataframe from a string array

var columnNames = df.columns
var df2 = df.select(columnNames) // columnNames is a String[Array]

This is giving me errors though. Is there any other way ?

I spent some time searching for the answer for the question and I have shown where I got the answer from . This will ease the search for questions similar to mine because the original question was tough to find . — Leothorn, Mar 18 '16 at 22:45

score 3 · Accepted Answer · edited May 23 '17 at 12:23

3

I got the answer from here

var columnNames = df.columns
var df2 =df.select(columnNames.head, columnNames.tail: _*)

edited May 23 '17 at 12:23

Community

answered Mar 17 '16 at 01:40

Leothorn

1 Answers1