class AddDerivedFields < ActiveRecord::Migration[7.0] def change change_table :case_logs, bulk: true do |t| t.decimal :wrent, precision: 10, scale: 2 t.decimal :wscharge, precision: 10, scale: 2 t.decimal :wpschrge, precision: 10, scale: 2 t.decimal :wsupchrg, precision: 10, scale: 2 t.decimal :wtcharge, precision: 10, scale: 2 t.decimal :wtshortfall, precision: 10, scale: 2 end end end