private function _getFullTableName($baseTableName, $includeDb= false) {
        $fqn= '';
        if (!empty ($baseTableName)) {
            if ($includeDb) {
                $fqn .= $this->escape($this->config['dbname']) . '.';
            }
            $fqn .= $this->escape($baseTableName);
        }
        return $fqn;
    }