^{从评论重新发布，因此可以关闭问题：}

• （SQLWCHAR *）是一个明显的错误。尝试 L ，以使您的字符串文字成为宽字符串文字。

• (SQLWCHAR*) is a glaring error. Try L instead to make your string literal a wide string literal.

默认连接超时是60秒，所以你可能会遇到这种情况。检查您的SQL协议设置，如果配置为在本地使用TCP，请检查您的防火墙设置。

The default connection timeout is 60 seconds, so you're probably running into that. Check your SQL protocol settings, and if it's configured to use TCP locally, check your firewall settings as well.