Question

有人可以解释为什么MySQL工作台会在

上抱怨语法错误

DECLARE @fil_name, @fil_path STRING; 2个错误：意外的'@fil_name'（在文本后缀处）和STRING（缺少冒号）

SELECT * FROM gumcad INTO OUTFILE @fil_path FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n';处的

@fil_path错误：意外的'@fil_path'（文字后缀）

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

修改

我刚才发现使用@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_path (unexpected '@export_path' (at text suffix))时遇到错误，有人可以解释一下吗？

NEW UPDATE 此刻没有更多的错误消息，我能够运行脚本，但现在一个问题是脚本似乎不会每2秒运行一次。

请看一下我修改过的脚本，我正在使用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 $$

SQL调度查询中的MySQL语法错误

0 个答案: