MySQL 空间位置坐标 geometry 的使用

时间 2021-06-02

标签函数 code 字符串 map 数据查询 block 栏目 MySQL 繁體版

原文原文链接

建表语句函数

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code

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

更新数据字符串

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

查询数据io

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map

// 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;