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