class CreateResults < ActiveRecord::Migration[5.0] def change create_table :results do |t| t.column :total, :integer , :null => false t.column :grade1, :integer t.column :grade2, :integer t.column :grade3, :integer t.column :grade4, :integer t.column :grade5, :integer t.column :grade6, :integer t.column :grade7, :integer t.column :grade8, :integer t.column :grade9, :integer t.column :grade10, :integer t.integer :machine_id t.integer :run_id t.timestamps end add_index :results, :machine_id add_index :results, :run_id end end