MySQL 空间位置坐标 geometry 的使用

Posted 2021-09-12 小伍

建表语句

CREATE TABLE `map` (
  `id` int(11) NOT NULL,
  `location` geometry NOT NULL,
  PRIMARY KEY (`id`),
  SPATIAL KEY `idx_location` (`location`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT=\'空间位置信息\';

插入数据

INSERT INTO map (id, location) VALUES (1, ST_GeomFromText(\'POINT(121.366961 31.190049)\'));

更新数据

UPDATE map SET location = ST_GeomFromText(\'POINT(121.366961 31.190049)\') where id = 1;

查询数据

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

ST_AsText()函数是将geometry类型转化为字符串

计算两点距离

// 计算结果单位是米，POINT()里经纬度使用逗号分隔
SELECT ST_Distance_Sphere(POINT(121.590347, 31.388094), location) AS distance FROM map;

SELECT ST_Distance_Sphere((SELECT location FROM map WHERE id = 1), location) AS distance FROM map WHERE id = 2;

查询指定距离范围内的数据

SELECT 
id, 
ST_Distance_Sphere(POINT(121.590347, 31.388094), location) AS distance, 
ST_AsText(location) AS location 
FROM map 
WHERE distance < 1000 
ORDER BY distance ASC;