将定界符与Aurora Serverless MySQL 5.6一起使用时的语法错误

Question

我正在使用Aurora无服务器MySQL 5.6创建以下触发器，当将数据插入到另一个表中但接收到语法错误时（特别是在Delimiter关键字周围），它将更新一个表。

DELIMITER $$
CREATE TRIGGER Create_Media_Like_Trigger AFTER INSERT ON MediaLike
FOR EACH ROW
BEGIN 
    IF NEW.likeType = 'LIKE' THEN
        UPDATE Media 
        SET Media.numLikes = Media.numLikes + 1 
        WHERE Media.mediaId = NEW.mediaId;
    ELSEIF NEW.likeType = 'DISLIKE' THEN
        UPDATE Media 
        SET Media.numLikes = Media.numLikes - 1 
        WHERE Media.mediaId = NEW.mediaId;
    ENDIF;
END $$
DELIMITER ;

就像我上面说的，我收到有关Delimiter的语法错误，此问题是AWS特定的，我该如何解决？

更新错误消息：

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 'DELIMITER $$ CREATE TRIGGER Create_Media_Like_Trigger 
AFTER INSERT ON MediaLike ' at line 1

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 'ELSEIF NEW.likeType = 'DISLIKE' THEN UPDATE Media SET 
Media.numLikes = Media.num' at line 1

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 'END $$' at line 1

Answer 1

此信息可能与OP的问题并不严格相关，但密切相关，可能会帮助处于类似情况（例如通过搜索）的其他人。

我在Amazon Aurora Serverless MySQL 5.6数据库上运行类似的CREATE FUNCTION查询，并且遇到相同的语法错误。我正在使用Table Plus（v2.9.1，内部版本264）作为我的应用程序/客户端。

解决方案是删除2x DELIMITER行。应用程序/客户端足够智能，可以解决定界符本身。