快速修复工作周围和转储文件:

mysqldump --single-transaction -u root -p xyz_live_db > xyz_live_db_bkup110116.sql

另外，要更改触发器的定义器(ALTER不起作用)，可以这样做:

为每个触发器生成一个DROP和CREATE命令:

SELECT CONCAT("DROP TRIGGER ", trigger_name, ";", " CREATE TRIGGER ", TRIGGER_NAME, " AFTER ", EVENT_MANIPULATION, " ON ", EVENT_OBJECT_SCHEMA, ".", EVENT_OBJECT_TABLE, " FOR EACH ROW ", ACTION_STATEMENT, ";") AS sqlCommand FROM information_schema.triggers WHERE EVENT_OBJECT_SCHEMA = "yourdatabase";

在foreach中执行它。我在我的应用程序中使用这个，当我把生产数据库带到我的开发机器上，用一个foreach遍历所有命令并自动重新创建触发器。这让我可以选择自动化它。

PHP/Laravel中的例子:

    $this->info('DROP and CREATE TRIGGERS');
    $pdo = DB::connection()->getPdo();
    $sql = 'SELECT CONCAT("DROP TRIGGER ", trigger_name, ";", " CREATE TRIGGER ", TRIGGER_NAME, " AFTER ", EVENT_MANIPULATION, " ON ", EVENT_OBJECT_SCHEMA, ".", EVENT_OBJECT_TABLE, " FOR EACH ROW ", ACTION_STATEMENT, ";") AS sqlCommand FROM information_schema.triggers WHERE EVENT_OBJECT_SCHEMA = "mydatabase";';
    $stmt = $pdo->prepare($sql, [PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true]);
    $stmt->execute();
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    $stmt->closeCursor();

    foreach($result as $rs){
        $pdo = DB::unprepared($rs['sqlCommand']);
        break;
    }

提示:我必须用pdo来做，因为mysql缓冲区查询问题，在这里描述

你可以试试这个:

$ mysql -u root -p 
> grant all privileges on *.* to `root`@`%` identified by 'password'; 
> flush privileges;

grant all on *.* to 'username'@'%' identified by 'password' with grant option;

例子:

grant all on *.* to 'web2vi'@'%' identified by 'password' with grant option;

对于未来的谷歌人:我收到了类似的消息，试图更新数据库中不包含视图的表。经过一番挖掘，我发现我在那个表上导入了触发器，而那些是由不存在的用户定义的东西。放下触发器就解决了问题。

对我来说，从DEFINER中删除“是有效果的。 DEFINER = user@localhost