Question

我正在尝试在MySQL中构建一个触发器，该触发器将在将新行插入表中后运行。如果检测到错误，那么我想将该触发器写入表。否则，我不想将错误写入表。我想尝试避免添加无限的空行。

这是我的代码：

CREATE 
TRIGGER character_validation4 AFTER INSERT 
ON address FOR EACH ROW 
Begin 
IF(New.city REGEXP '^[^a-zA-Z0-9]') 
THEN 
INSERT INTO errorlog (city, mainprocessid) Values("There is an error with the city", New.ID));
END

但我发现最后一个支架上有错误。

有人可以帮忙吗？感谢

Answer 1

DELIMITER \\

CREATE 
TRIGGER character_validation4 AFTER INSERT 
ON address FOR EACH ROW 
Begin 
IF(New.city REGEXP '^[^a-zA-Z0-9]') 
THEN 
INSERT INTO errorlog (city, mainprocessid) Values("There is an error with the city", New.ID);
END IF;
END \\

DELIMITER ;

Answer 2

看来你在New.ID之后有一个额外的“）”。试试这种方式

CREATE TRIGGER character_validation4 
AFTER INSERT ON address FOR EACH ROW Begin 
IF(New.city REGEXP '^[^a-zA-Z0-9]') THEN INSERT INTO errorlog (city, mainprocessid) 
Values("There is an error with the city", New.ID);
END IF;
END;

触发器中的MySQL IF语句 - ELSE不执行任何操作

2 个答案: