Question

我试图创建以下触发器，但它不起作用：

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; 
//

出现以下错误：

＆＃34;＃1064 - 您的SQL语法出错;检查与您的MySQL服务器版本对应的手册，以便在＆＃39; //＆＃39;附近使用正确的语法。在第8行＆＃34;

任何想法可能是什么问题？

Answer 1

您是否通过删除分号进行检查，并在$$

之后添加END

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 ;

MySql触发器无法正常工作，语法错误

1 个答案: