Question

是否可以将billing_address_street，billing_address_city，billing_address_state，billing_address_postalcode和billing_address_country连接为一个称为地址的字段？

地址字段的预期结果如下

3401 Dufferin St，北约克，ON，M6A 2T9，加拿大

SELECT a.name                       AS Name, 
       a.billing_address_street     AS Address, 
       a.billing_address_city       AS City, 
       a.billing_address_state      AS State, 
       a.billing_address_postalcode AS Zip, 
       a.billing_address_country    AS Country, 
       a.phone_office               AS PhoneNumber1, 
       a.date_modified              AS DateModify, 
       ac.store_c                   AS Store, 
       e.email_address              AS Email 
FROM   accounts AS a, 
       accounts_cstm AS ac, 
       email_addr_bean_rel AS eb, 
       email_addresses AS e 
WHERE  a.id = ac.id_c 
       AND a.id = eb.bean_id 
       AND eb.bean_id = e.id 
       AND a.phone_office = '6471111234' 
       AND a.deleted != 1 
GROUP  BY a.id 
ORDER  BY a.date_modified 
LIMIT  1

Answer 1

如果可以，请在应用程序层中执行此操作。它可以更好地处理缺少的地址组件等。

如果您确实想在数据库层中执行此操作，那么CONCAT()可以执行以下操作：

SELECT a.name                       AS Name,
       CONCAT(
         a.billing_address_street, ',',
         a.billing_address_city, ',',
         a.billing_address_state, ',', 
         a.billing_address_postalcode, ',', 
         a.billing_address_country
       ) AS address, 
       a.phone_office               AS PhoneNumber1, 
       a.date_modified              AS DateModify, 
       ac.store_c                   AS Store, 
       e.email_address              AS Email 
FROM   accounts AS a, 
       accounts_cstm AS ac, 
       email_addr_bean_rel AS eb, 
       email_addresses AS e 
WHERE  a.id = ac.id_c 
       AND a.id = eb.bean_id 
       AND eb.bean_id = e.id 
       AND a.phone_office = '6471111234' 
       AND a.deleted != 1 
GROUP  BY a.id 
ORDER  BY a.date_modified 
LIMIT  1

Answer 2

您应该可以使用CONCAT： https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_concat

可能重复： https://stackoverflow.com/a/5734624

我可以将多个MySQL列连接到一个字段中吗？

2 个答案: