Question

我正在尝试在MySQL中实现一个触发器，该触发器会在添加/修改另一个列时自动添加/修改列。基本上，我希望在type中添加/修改值时，type_sanitized type作为slug保存。

这是我最初的尝试：

DROP TRIGGER IF EXISTS ArticleTypes.insert_sanitized_article_type;

CREATE TRIGGER 'insert_sanitized_article_type'
AFTER INSERT
ON 'ArticleTypes'
FOR EACH ROW
SET NEW.type_sanitized = LOWER(REPLACE(TRIM(NEW.type), ' ', '-'));

DROP TRIGGER IF EXISTS ArticleTypes.update_sanitized_article_type;

CREATE TRIGGER 'update_sanitized_article_type'
AFTER UPDATE
ON 'ArticleTypes'
FOR EACH ROW 
SET NEW.type_sanitized = LOWER(REPLACE(TRIM(NEW.type), ' ', '-'));

在网上看到建议后，我尝试添加这样的分隔符：

DROP TRIGGER IF EXISTS ArticleTypes.insert_sanitized_article_type;

DELIMITER $$
CREATE TRIGGER 'insert_sanitized_article_type'
AFTER INSERT
ON 'ArticleTypes'
FOR EACH ROW 
BEGIN
SET NEW.type_sanitized = LOWER(REPLACE(TRIM(NEW.type), ' ', '-'));
END$$
DELIMITER ;

DROP TRIGGER IF EXISTS ArticleTypes.update_sanitized_article_type;

DELIMITER $$
CREATE TRIGGER 'update_sanitized_article_type'
AFTER UPDATE
ON 'ArticleTypes'
FOR EACH ROW 
BEGIN
SET NEW.type_sanitized = LOWER(REPLACE(TRIM(NEW.type), ' ', '-'));
END$$
DELIMITER ;

我收到以下错误：

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''insert_sanitized_article_title'
AFTER INSERT
ON 'ArticleTypes'
FOR EACH ROW 
BE' at line 1

这是我第一次在MySQL中创建触发器，所以它可能很明显，但我无法在2小时的搜索中找到它，所以任何帮助都将非常感激。

Answer 1

删除撇号。

DROP TRIGGER IF EXISTS ArticleTypes.insert_sanitized_article_type;

DELIMITER $$
CREATE TRIGGER insert_sanitized_article_type
AFTER INSERT
ON ArticleTypes
FOR EACH ROW 
BEGIN
SET @type_sanitized = LOWER(REPLACE(TRIM(@type), ' ', '-'));
END$$
DELIMITER ;

DROP TRIGGER IF EXISTS ArticleTypes.update_sanitized_article_type;

DELIMITER $$
CREATE TRIGGER update_sanitized_article_type
AFTER UPDATE
ON ArticleTypes
FOR EACH ROW 
BEGIN
SET @type_sanitized = LOWER(REPLACE(TRIM(@type), ' ', '-'));
END$$
DELIMITER ;

MySQL触发器语法错误＃1064

1 个答案: