Initial commit

db/migrate/20200117160600_add_uuid_to_order.rb

@@ -0,0 +1,9 @@
+class AddUUIDToOrder < ActiveRecord::Migration[5.2]
+  def change
+    add_column :orders, :uuid, :binary, limit: 16, index: {unique: true}, after: :id
+
+    %w[created_at updated_at].each do |ts|
+      change_column :orders, ts, :datetime, limit: 3
+    end
+  end
+end