Mysql 距离搜索

建表和索引

CREATE TABLE `map` (
 `id` int(11) NOT NULL,
 `address` varchar(255) NOT NULL DEFAULT '',
 `location` geometry NOT NULL,
 PRIMARY KEY (`id`),
 SPATIAL KEY `idx_location` (`location`)
)

插入数据

INSERT INTO map (id, address, location) VALUES (2, '南京', ST_GeomFromText('POINT(120.366961 30.190049)'));

简单搜索

SELECT address, ST_AsText(location) AS location FROM map;

搜索本地和数据库保存的位置距离

SELECT address, ST_Distance_Sphere(POINT(121.590347, 31.388094),location) AS distant FROM map;

搜索距离小于100000m城市，并按距离排序

SELECT id, address, ST_Distance_Sphere(POINT(121.590347, 31.388094),location) AS distant 
FROM map 
WHERE ST_Distance_Sphere(POINT(121.590347, 31.388094),location) < 100000 ORDER BY distant;