SQL调度查询中的MySQL语法错误

有人能解释为什么MySQL workbench会抱怨语法错误吗

声明@fil\u名称，@fil\u路径字符串2错误：意外的“@fil_name”（在文本后缀处）和字符串处（缺少冒号）

选择*从gumcad进入OUTFILE@fil_路径字段，以“，”结尾的行以“\n”结尾在
@fil\u路径处出错
：意外的“@fil\u路径”（在文本后缀处）

编辑

我刚刚发现，当使用@var时，我不必使用DECLARE。这是我的新剧本：

DELIMITER //
CREATE EVENT `Export` ON SCHEDULE EVERY 2 SECOND
ON COMPLETION PRESERVE 
ENABLE 
DO BEGIN    
    SET @fil_name=CONCAT('GUMCAD-', DATE_FORMAT(now(), '%d%m%y'), '.csv');
    SET @fil_path='C:/app/reports/gumcad/';
    SET @export_path=CONCAT(@fil_path, @fil_name);

    SELECT * FROM gumcad INTO OUTFILE @export_path FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n'; 
    INSERT INTO imported_reports (imr_est_id, imr_type, imr_create_date, imr_created, imr_record_status, imr_file_path, imr_file_name, imr_created_by)
    VALUES (2, GUMCAD, CURDATE(), NOW(), 'approved', @fil_path, @fil_name, 'SHEP');
END
DELIMITER;

但是我在
@export\u path
（意外的'@export\u path'（文本后缀））
，有人能解释一下吗

新更新
目前没有更多的错误消息，我能够运行脚本，但现在的一个问题是脚本似乎不是每2秒运行一次

请看一下我修改过的脚本，我使用的是MySQL 5.5：

DELIMITER $$
CREATE EVENT `Export` ON SCHEDULE EVERY 2 SECOND
ON COMPLETION PRESERVE 
ENABLE 
DO BEGIN
    DECLARE fil_name varchar(200);
    DECLARE export_path varchar(200);
    DECLARE fil_path varchar(200);   

    SET fil_name=CONCAT('GUMCAD-', DATE_FORMAT(now(), '%d%m%y'), '.csv');
    SET fil_path='C:/cellma/reports/gumcad/';
    SET export_path=CONCAT(fil_path, fil_name);

    SELECT * FROM gumcad INTO OUTFILE "export_path" FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n'; 
    INSERT INTO imported_reports (imr_est_id, imr_type, imr_create_date, imr_created, imr_record_status, imr_file_path, imr_file_name, imr_created_by)
    VALUES (2, GUMCAD, CURDATE(), NOW(), 'approved', @fil_path, @fil_name, 'SHEP');
END $$

尝试更改
声明@fil\u名称、@fil\u路径字符串带有
声明文件名、文件路径字符串show events
时，会列出该事件。但它不是每2秒工作一次。。。有关信息，请参阅我的更新
DELIMITER $$
CREATE EVENT `Export` ON SCHEDULE EVERY 2 SECOND
ON COMPLETION PRESERVE 
ENABLE 
DO BEGIN
    DECLARE fil_name varchar(200);
    DECLARE export_path varchar(200);
    DECLARE fil_path varchar(200);   

    SET fil_name=CONCAT('GUMCAD-', DATE_FORMAT(now(), '%d%m%y'), '.csv');
    SET fil_path='C:/cellma/reports/gumcad/';
    SET export_path=CONCAT(fil_path, fil_name);

    SELECT * FROM gumcad INTO OUTFILE "export_path" FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n'; 
    INSERT INTO imported_reports (imr_est_id, imr_type, imr_create_date, imr_created, imr_record_status, imr_file_path, imr_file_name, imr_created_by)
    VALUES (2, GUMCAD, CURDATE(), NOW(), 'approved', @fil_path, @fil_name, 'SHEP');
END $$