private function hasColumnDifference()
    {
        return !empty($this->createdColumns) || !empty($this->alteredColumns) || !empty($this->droppedColumns);
    }
private function hasColumnDifference()
    {
        return !empty($this->createdColumns) || !empty($this->alteredColumns) || !empty($this->droppedColumns);
    }
private function hasColumnDifference ( ) { return ! empty ( $ this -> createdColumns ) || ! empty ( $ this -> alteredColumns ) || ! empty ( $ this -> droppedColumns ) ; }
Checks if the table diff has column difference.

@return boolean TRUE if the table has column difference else FALSE.
Checks if the table diff has column difference .