mysql获取关联表下最新数据

SELECT fang_time, city_name, IF(area is NULL,0,area), IF(taoshu is NULL,0,taoshu) FROM f_city AS fc LEFT JOIN (SELECT * FROM f_chengjiao ORDER by fang_time DESC) AS fcj USING (city_id) GROUP BY fc.city_id

回复讨论(解决方案)

SELECT fang_time, city_name, IF(AREA IS NULL,0,AREA) AS arra, IF(taoshu IS NULL,0,taoshu) AS taoshu
FROM f_city AS fc INNER JOIN
(SELECT * FROM f_chengjiao ORDER BY fang_time DESC) AS fcj
USING (city_id) ORDER BY fcj.fang_time DESC

你要的是不是这样的，如果不是欢迎追问。

SELECT fang_time, city_name, IF(AREA IS NULL,0,AREA) AS arra, IF(taoshu IS NULL,0,taoshu) AS taoshu
FROM f_city AS fc INNER JOIN
(SELECT * FROM f_chengjiao ORDER BY fang_time DESC) AS fcj
USING (city_id) ORDER BY fcj.fang_time DESC

你要的是不是这样的，如果不是欢迎追问。