MySQL触发器不起作用，语法错误

Question

我尝试创建以下触发器，但是不起作用：

delimiter //
CREATE TRIGGER DeleteFeature
AFTER DELETE ON Features
FOR EACH ROW BEGIN        
    IF (OLD.FeatureID IN (SELECT FeatureID FROM GroupFeatures)) THEN
      INSERT INTO DeletedFeatures VALUES (OLD.FeatureID, OLD.FeatureName, OLD.FeatureDescription);
    END IF;
END; 
//

它给出了以下错误：

“＃1064-您的SQL语法有误；请查看与您的MySQL服务器版本相对应的手册，以找到在第8行'//'附近使用的正确语法”

任何想法可能是什么问题？

Answer 1

您是否已通过删除分号并在END之后添加$$进行了检查

DELIMITER $$
CREATE TRIGGER DeleteFeature
AFTER DELETE ON Features
FOR EACH ROW 
  BEGIN        
    IF (OLD.FeatureID IN (SELECT FeatureID FROM GroupFeatures)) THEN
      INSERT INTO DeletedFeatures VALUES (OLD.FeatureID, OLD.FeatureName OLD.FeatureDescription);
    END IF;
  END $$
DELIMITER ;