public function execute($params = array())
    {
        $this->mergeParams($params);

        $reconnect = $this->db->getOption('reconnect');
        $reconnectRetries = $this->db->getOption('reconnect_retries', 3);
        $reconnectDelayMS = $this->db->getOption('reconnect_delay_ms', 1000);

        while (true) {
            $e = null;
            $errorCode = null;
            $errorInfo = null;
            $result = null;

            $isReconnectError = false;
            try {
                $this->prepare();
                foreach ($this->positionParams as $index => $value) {
                    $this->statement->bindValue($index + 1, $value);
                }

                $result = $this->statement->execute($this->params?:null);
            } catch (\Exception $e) {
            }

            if ($result === false || !$e) {
                $errorCode = $this->statement->errorCode();
                $errorInfo = $this->statement->errorInfo();
            }

            $isReconnectError = Util::checkReconnectError($errorCode, $errorInfo, $e);

            // reconnect
            if ($reconnect && $isReconnectError && $reconnectRetries > 0) {
                $reconnectRetries--;
                $this->statement = null;
                $this->db->close();
                $reconnectDelayMS && usleep($reconnectDelayMS * 1000);
                continue;
            }

            break;
        }

        if ($e) {
            $this->db->logError(sprintf('Statement exception error #%s: %s', $e->getCode(), $e->getMessage()));
            throw $e;
        }

        if ($result === false) {
            $this->db->logError(sprintf('Statement execute error #%s: %s', $errorInfo[0], $errorInfo[2]));
            return false;
        }

        return $this->statement->rowCount();
    }