Nette\Database\Structure::getPrimaryKeySequence PHP Метод

    public function getPrimaryKeySequence($table)
    {
        $this->needStructure();
        $table = $this->resolveFQTableName($table);
        if (!$this->connection->getSupplementalDriver()->isSupported(ISupplementalDriver::SUPPORT_SEQUENCE)) {
            return NULL;
        }
        $primary = $this->getPrimaryKey($table);
        if (!$primary || is_array($primary)) {
            return NULL;
        }
        foreach ($this->structure['columns'][$table] as $columnMeta) {
            if ($columnMeta['name'] === $primary) {
                return isset($columnMeta['vendor']['sequence']) ? $columnMeta['vendor']['sequence'] : NULL;
            }
        }
        return NULL;
    }