mysql 计算两坐标间的距离

mysql 5.6.1 加入了空间数据支持功能,新增了st_*相关函数,能够很是方便的计算两个地理坐标点的距离了。html

以下例子:按个人坐标计算周边坐标的距离并由近到远排序mysql

select name,st_distance(point(113.327955,23.129717),point)*111195 as distance,address from table1 where st_distance(point(113.327955,23.129717),point)*111195 < 100 order by distance asc limit 100sql

注意:其中point字段类型是 point,其值能够经过如下方法写入:app

update table1 set point = point(113.123232,24.1324234)函数

st_distance 计算的结果单位是 度,须要乘111195(地球半径6371000*PI/180) 是将值转化为米spa

#获取文本值htm

select astext(shape), name from waypoints blog

 

其它相关空间函数参考官方手册排序

http://dev.mysql.com/doc/refman/5.6/en/spatial-relation-functions-mbr.htmlget

参考

https://www.percona.com/blog/2013/10/21/using-the-new-spatial-functions-in-mysql-5-6-for-geo-enabled-applications/

st_distance函数参考

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