I have a CSV file (in which the field separator is indeed comma) with 8 columns and a few million rows. Here's a sample:
1000024447,38111220,201705,181359,0,12,1,3090 1064458324,38009543,201507,9,0,1,1,1298 1064458324,38009543,201508,9,0,2,1,90017
What's the fastest way to print the sum of all numbers in a given column, as well as the number of lines read? Can you explain what makes it faster?