code: function first() {
      var i,
          args = new Array(arguments.length);
      for (i = 0; i < args.length; i++) {
        args[i] = arguments[i];
      }
      this.select.apply(this, args);
      this._method = 'first';
      this.limit(1);
      return this;
    }
docs: Sets the values for a `select` query, informing that only the first row should be returned (limit 1).