有两张表
tbl_user(uid,uname,province_id,city_id,area_id)
tbl_area(id,aname,pid)
其中province_id,city_id,area_id全部为tbl_area表的主键id
能不能通过一条sql语句查询出如下结果
uid,uname,province_name,city_name,area_name
1, 张三, 河北, 衡水, 饶阳
巴扎黑2017-04-17 15:16:39
SELECT u.uid, u.uname, p.aname AS province_name, c.aname AS city_name, a.aname AS area_name
FROM tbl_user AS u
LEFT JOIN tbl_area AS p ON p.id = u.province_id
LEFT JOIN tbl_area AS c ON c.id = u.city_id
LEFT JOIN tbl_area AS a ON a.id = u.area_id
LIMIT 100