# File lib/active_record/base.rb, line 670
      def update_all(updates, conditions = nil, options = {})
        sql  = "UPDATE #{table_name} SET #{sanitize_sql_for_assignment(updates)} "
        scope = scope(:find)
        add_conditions!(sql, conditions, scope)
        add_order!(sql, options[:order], scope)
        add_limit!(sql, options, scope)
        connection.update(sql, "#{name} Update")
      end