--- /dev/null
+class AddUserPreferenceId < ActiveRecord::Migration
+ def self.up
+ add_column "user_preferences", "id", :bigint, :limit => 64, :null => false, :options => "AUTO_INCREMENT"
+
+ add_index "user_preferences", ["id"], :name => "user_preferences_id_idx"
+ end
+
+ def self.down
+ remove_index 'user_preferences', 'id'
+ remove_column 'user_preferences', 'id'
+ end
+end