mysql 5.6.1 加入了空间数据支持功能,新增了st_*相关函数,可以非常方便的计算两个地理坐标点的距离了。
如下例子:按我的坐标计算周边坐标的距离并由近到远排序
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 100
注意:其中point字段类型是 point,其值可以通过以下方法写入:
update table1 set point = point(113.123232,24.1324234)
如下例子:按我的坐标计算周边坐标的距离并由近到远排序
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 100
注意:其中point字段类型是 point,其值可以通过以下方法写入:
update table1 set point = point(113.123232,24.1324234)
st_distance 计算的结果单位是 度,需要乘111195(地球半径6371000*PI/180) 是将值转化为米
其它相关空间函数参考官方手册
http://dev.mysql.com/doc/refman/5.6/en/spatial-relation-functions-mbr.html