用不同的值更新每一行-MYSQL

Question

我正在进行wordpress迁移，我想将本地url网站更改为新的生产url。

我想根据此查询以不同的值更新每一行：

SELECT IF(guid LIKE '%test.local%', REPLACE(guid, 'http://test.local', 'prod-url'), 
                                    REPLACE(guid, SUBSTRING_INDEX(guid, "/", 3), "prod-url")) AS "guid"
                                    FROM wp_posts

这是我已执行的mysql查询：

UPDATE wp_posts SET a.guid =(SELECT * FROM (
                                        SELECT IF(guid LIKE '%test.local%', 
                                        REPLACE(guid, 'http://test.local', 'prod-url'), 
                                        REPLACE(guid, SUBSTRING_INDEX(guid, "/", 3), "prod-url")) AS "guid"
                                        FROM wp_posts) AS X )

实际输出是错误：子查询返回多于1行