触发器中的语法错误

Question

我在创建MySQL（5.1）触发器时遇到了问题，我真的没有看到我在这里做错了什么。下面的代码：

DELIMITER // 
CREATE TRIGGER CheckSoftware BEFORE INSERT ON Software 
FOR EACH ROW BEGIN 
    -- Uppercase the first letter 
    SET NEW.name = CONCAT(UPPER(SUBSTRING(NEW.name, 1, 1)), SUBSTRING(NEW.name, 2)); 

    -- If price isn't round 
    IF NEW.price != TRUNCATE(NEW.price) THEN 
     IF NEW.price - TRUNCATE(NEW.price) <= 0.49 THEN 
      -- Sets it to xx.49 
      SET NEW.price = TRUNCATE(NEW.price) + 0.49; 
     ELSIF (NEW.price - TRUNCATE(NEW.price)) <= 0.99 THEN 
      -- Sets it to xx.99 
      SET NEW.price = TRUNCATE(NEW.price) + 0.99; 
     END IF; 
    END IF; 
END; 
// 
DELIMITER ; 

什么的MySQL抛出我的脸：

ERROR 1064 (42000): 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 ') THEN 
     IF NEW.price - TRUNCATE(NEW.price) <= 0.49 THEN  
    ' at line 7 

非常感谢看着它！

Answer 1

DELIMITER // 
    CREATE TRIGGER CheckSoftware BEFORE INSERT ON Software 
    FOR EACH ROW BEGIN 
     -- Uppercase the first letter 
     SET NEW.name = CONCAT(UPPER(SUBSTRING(NEW.name, 1, 1)), SUBSTRING(NEW.name, 2)); 

     -- If price isn't round 
     IF NEW.price != TRUNCATE(NEW.price,2) THEN 
      IF NEW.price - TRUNCATE(NEW.price,2) <= 0.49 THEN 
       -- Sets it to xx.49 
       SET NEW.price = TRUNCATE(NEW.price,2) + 0.49; 
      ELSIF (NEW.price - TRUNCATE(NEW.price,2)) <= 0.99 THEN 
       -- Sets it to xx.99 
       SET NEW.price = TRUNCATE(NEW.price,2) + 0.99; 
      END IF; 
     END IF; 
    END; 
    // 

DELIMITER ; 

截断功能使用两个参数！

Answer 2

DELIMITER # 

CREATE TRIGGER CheckSoftware BEFORE INSERT ON Software 
FOR EACH ROW BEGIN 
    SET NEW.name = CONCAT(UPPER(SUBSTRING(NEW.name, 1, 1)), SUBSTRING(NEW.name, 2)); 
    IF NEW.price != TRUNCATE(NEW.price) THEN 
     ... 
    END IF; 
END # -- end of create trigger 

DELIMITER ; 

编辑 - 区别：

... 
END; <---- 
# -- end of create trigger 


DELIMITER ;