class AddUsersFb < ActiveRecord::Migration
  def self.up
      add_column :users, :fb_user_id, :integer
      add_column :users, :email_hash, :string
      
      #if mysql
      execute("alter table users modify fb_user_id bigint")
  end

  def self.down
      remove_column :users, :fb_user_id
      remove_column :users, :email_hash
  end
end
