需要MYSQL_BIND解决方案？ ？符号

Question

我对mysql数据库有疑问。当我尝试使用以下函数MYSQL_BIND时，出现以下错误

  

MySQL查询错误：您的SQL语法出错;检查   手册，对应右边的MySQL服务器版本   在第1行“？，？）”附近使用的语法

我一直在寻找网络，到目前为止我还没有找到解决问题的方法。我想我在查询query = "INSERT INTO users (num1, num2) values (?, ?)";

中使用了错误的符号

代码在c ++中

  MYSQL *conn;      // the connection
  MYSQL_RES *res;   // the results
  MYSQL_ROW row;    // the results row (line by line)
  MYSQL_STMT *stmt;
  MYSQL_BIND params[2];
  char *query;

  int var1 = 222;
  int var2 = 55;

  struct connection_details mysqlD;
  mysqlD.server = "localhost";  // where the mysql database is
  mysqlD.user = "root";     // the root user of mysql   
  mysqlD.password = "pass1"; // the password of the root user in mysql
  mysqlD.database = "db1";  // the databse to pick

  // connect to the mysql database
  conn = mysql_connection_setup(mysqlD);

  memset(params, 0, sizeof(params));
  query = "INSERT INTO users (num1, num2) values (?, ?)";

 params[0].buffer = &var1;
 params[0].buffer_type = MYSQL_TYPE_LONG;
 params[1].buffer = &var1;
 params[1].buffer_type = MYSQL_TYPE_LONG;

  // assign the results return to the MYSQL_RES pointer
  //res = mysql_perform_query(conn, "show tables");


  mysql_perform_query(conn, query); 

我将非常感谢你的帮助