protected function mergeColumnSchema($origin, $override)
    {
        $override->dbType .= ',' . $override->dbType;

        if ($override->isField) {
            $origin->isField = true;
        }
        if ($override->isAttribute) {
            $origin->isAttribute = true;
            $origin->type = $override->type;
            $origin->phpType = $override->phpType;

            if ($override->isMva) {
                $origin->isMva = true;
            }
        }

        return $origin;
    }