mysql查询magento连续左连接问题

Question

我的这个查询没有给我来自 magento 1.9 数据库的预期结果：

SELECT 
customer.email AS email,
company.value as comp

FROM customer_entity AS customer

JOIN customer_address_entity AS addressentity
    ON customer.entity_id=addressentity.parent_id

LEFT JOIN customer_address_entity_varchar AS company
    ON  company.entity_id=addressentity.entity_id
WHERE
    customer.store_id = 1 AND

    company.attribute_id=24 AND

    customer.email="this@mail.com"

如果它不存在，它应该给我电子邮件和公司值为 null，但如果没有公司名称，它什么也不给我。

Answer 1

对于 customer_address_entity 表也请使用左外连接，

SELECT 
customer.email AS email,
company.value as comp

FROM customer_entity AS customer

FULL OUTER JOIN customer_address_entity AS addressentity
    ON customer.entity_id=addressentity.parent_id

FULL OUTER JOIN customer_address_entity_varchar AS company
    ON  company.entity_id=addressentity.entity_id;