最近写文章的时候用到了emoji，发现报错：Database Query Error

解决办法

1、进入数据库，直接运行下列语句：

    alter table typecho_comments convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_contents convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_fields convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_metas convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_options convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_relationships convert to character set utf8mb4 collate utf8mb4_general_ci;
    alter table typecho_users convert to character set utf8mb4 collate utf8mb4_general_ci;

2、修改数据库的配置文件

网站根目录数据库配置文件 config.inc.php，大约在60行

    /** 定义数据库参数 */
    $db = new Typecho_Db('Pdo_Mysql', 'typecho_');
    $db->addServer(array (
      ...
      'charset' => 'utf8mb4',  // 将原来的utf8修改为 utf8mb4
      ...
    ), Typecho_Db::READ | Typecho_Db::WRITE);
    Typecho_Db::set($db);