select id,catename,path,concat(path,',',id) as fullpath from likecate where 1 order by fullpath asc;

INSERT INTO likecate VALUES

(1,'','手机',0,0),

(2,'1','功能手机',0,0),

(3,'1,2','老人手机',0,0),

(4,'1,2','儿童手机',0,0),

(5,'1','智能手机',0,0),

(6,'1,5','Android手机',0,0),

(7,'1,5','iOS手机',0,0),

(8,'1,5','winphoto手机',0,0),

(9,'1,2,4','色盲手机',0,0),

(10,'1,2,3','大字手机',0,0),

(11,'12','台式机',0,0),

(12,'','电脑',0,0),/*经过一些增删操作，有可能父类id大于子类id*/

(13,'12,11','一体机',0,0),

(14,'12,11','非一体机',0,0),

(15,'12','笔记本',0,0);