Mysql/php SELECT ORDER BY

Question

我有一个选择:

SELECT * FROM xxx WHERE id = 5 ORDER BY id DESC

但我需要使用另一个表中的"名称"列来命令我的选择...我该怎么办？

Answer 1

SELECT  xxx.*, yyy.name
FROM    xxx
JOIN    yyy
ON      yyy.x_id = xxx.id
WHERE   xxx.id = 5
ORDER BY
        yyy.name DESC