public function resetSelect($field = null)
    {
        $this->_select = array();
        if ($field !== null) {
            $this->select($field);
        }

        return $this;
    }
public function resetSelect($field = null)
    {
        $this->_select = array();
        if ($field !== null) {
            $this->select($field);
        }

        return $this;
    }
public function resetSelect ( $ field = null ) { $ this -> _select = array ( ) ; if ( $ field !== null ) { $ this -> select ( $ field ) ; } return $ this ; }
Reset select and add a new field

@param $field

@return $this
Reset select and add a new field