go-sql-driver does not support prepared sql. but go-sql-driver does not support prepared sql for mysql user management, like drop user/rename user/create user.
mysql user management is important for us, we need go-sql-driver support prepared sql for mysql user management.

Why do you think so? Please provide runnable code.

The driver just sends a query and receive result.
If you saw any error, it might come from MySQL server. E.g. you just don't have permission to create users.