class AddGradesToRespondent < ActiveRecord::Migration[7.0] def change add_column :respondents, :pk, :integer add_column :respondents, :k, :integer add_column :respondents, :one, :integer add_column :respondents, :two, :integer add_column :respondents, :three, :integer add_column :respondents, :four, :integer add_column :respondents, :five, :integer add_column :respondents, :six, :integer add_column :respondents, :seven, :integer add_column :respondents, :eight, :integer add_column :respondents, :nine, :integer add_column :respondents, :ten, :integer add_column :respondents, :eleven, :integer add_column :respondents, :twelve, :integer end end