MySQL觸發器不起作用，語法錯誤

Question

我嘗試創建以下觸發器，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; 
//

它給出了以下錯誤：

“＃1064-您的SQL語法有誤；請查看與您的MySQL服務器版本相對應的手冊，以找到在第8行'//'附近使用的正確語法”

任何想法可能是什么問題？

Answer 1

您是否已通過刪除分號並在END之后添加$$進行了檢查

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 ;