#!/usr/bin/ruby -w

require 'CSV'

old_table = CSV.open('file.csv','r')

index = [{}, {}, {}, {}, {}, {}, {}, {}, {}, {}] # create 10 index hashes, one for each column

old_table.each do |row|
 row.each_with_index do |column,col_num|
  (index[col_num][column] ||= []) << row
 end
end

print index[0]['whatever'] # all the rows with 'whatever' as the first value

puts "Out of the block now"
puts new_table