c++ - 连接器 c++ res->getBoolean 访问冲突

Question

我在 Visual Studio 2013 中使用 mysql-connector-c++-1.1.4-winx64。连接到特定数据库并读取整数值是可行的，但无法检索任何 bool 值。
我可以编译包含附加代码的程序，但程序关闭检索:

"The program '[3480] Project1.exe: Managed (v4.0.30319)' has exited with code -1073741819 (0xc0000005) 'Access violation'."

感谢您的帮助!

                                    const char* idQuery = "SELECT EXISTS (SELECT id FROM experiment_results WHERE id='22');";
                                    stmt = con->createStatement();
                                    stmt->execute(idQuery);
                                    while (res->next()) 
                                    {
                                        bool flag = res->getBoolean(1);
                                    }

Answer 1

再次查看代码后，我发现我的错误:stmt->执行(idQuery)；//应该:res = stmt->executeQuery(idQuery);