MySQL触发嵌套select语句

Question

我在我的magento数据库中触发器的语法有些困难。

我想在创建新地址时更新客户表中的值。

的customer_address_entity_varchar表看起来像这样：

value_id | entity_type_id | attribute_id | entity_id | value 
48  | 2    | 28   | 3   | Lancashire 

当我没有它的工作原理嵌套的select语句的触发器，所以：

IF (new.attribute_id=28) THEN 
UPDATE customer_entity SET customer_entity.group_id = 4 
WHERE customer_entity.entity_id = 1 
END IF; 

我试图使用new.entity_id和新.value从其他表中选择值取代4和1：

DROP TRIGGER IF EXISTS `groupid_update`; 
CREATE DEFINER=`rock_store`@`localhost` TRIGGER `groupid_update` 
AFTER INSERT ON `customer_address_entity_varchar` 

FOR EACH ROW 

IF (new.attribute_id = 28) THEN 

UPDATE customer_entity 
SET customer_entity.group_id = ( 
    SELECT directory_country_region_name.customer_group_id 
    FROM directory_country_region_name 
    WHERE directory_country_region_name.name = "'" + new.value + "'") 
WHERE customer_entity.entity_id = ( 
    SELECT customer_address_entity.parent_id 
    FROM customer_address_entity 
    WHERE customer_address_entity.entity_id = new.entity_id); 
END IF; 

在MySQL中创建触发器是成功的，但是当我尝试在Magento中添加新地址时，出现一个错误，它告诉我什么都没有。

感谢您的帮助。利亚姆

Answer 1

我设法解决这个问题，打破了我想要做的。

IF (new.attribute_id = 28) THEN 

SET @add_entity_id = new.entity_id; 
SET @county = new.value; 


SET @group_id = (SELECT directory_country_region_name.customer_group_id 
FROM directory_country_region_name 
WHERE directory_country_region_name.name = @county); 

SET @customer_id = ( 
SELECT customer_address_entity.parent_id 
FROM customer_address_entity 
WHERE customer_address_entity.entity_id = new.entity_id); 

UPDATE customer_entity SET customer_entity.group_id = @group_id WHERE customer_entity.entity_id = @customer_id; 

END IF