vc 读取mysql

#include <mysql.h>
#include <iostream>

int main() {
    MYSQL mysql;
    MYSQL_RES *res;
    MYSQL_ROW row;

    // 初始化MySQL连接
    mysql_init(&mysql);

    // 连接到MySQL数据库
    if (!mysql_real_connect(&mysql, "localhost", "username", "password", "database", 3306, NULL, 0)) {
        std::cerr << "Failed to connect to database: " << mysql_error(&mysql) << std::endl;
        return 1;
    }

    // 执行SQL查询
    if (mysql_query(&mysql, "SELECT * FROM table_name")) {
        std::cerr << "Failed to execute query: " << mysql_error(&mysql) << std::endl;
        return 1;
    }

    // 获取查询结果
    res = mysql_store_result(&mysql);
    if (res == NULL) {
        std::cerr << "Failed to store result: " << mysql_error(&mysql) << std::endl;
        return 1;
    }

    // 处理查询结果
    while ((row = mysql_fetch_row(res)) != NULL) {
        for (int i = 0; i < mysql_num_fields(res); i++) {
            std::cout << row[i] << " ";
        }
        std::cout << std::endl;
    }

    // 释放资源
    mysql_free_result(res);
    mysql_close(&mysql);

    return 0;
}