Write the Code. Change the World.

12月 10

虽然,mariadb 可以替代 mysql,但某些函数,mariadb 是没有的。比如,ST_Distance_Sphere 。当然,mariadb 拥有的函数 mysql 也不一定有。

请参考:
https://mariadb.com/kb/en/library/function-differences-between-mariadb-102-and-mysql-57/

https://mariadb.com/kb/en/library/mysqlmariadb-spatial-support-matrix/

看着 ST_Distance_Sphere 很好用,却不能用。那也没办法,可以试试 ST_DISTANCE 函数。

eg:

select ST_Distance_Sphere(ST_GeomFromText(‘Point(115.452081 30.486021)’), position) as distance from ball_invitations

select (ST_Distance(GeomFromText(‘Point(115.452081 30.486021)’), position) / 0.0111195) as distance from ball_invitations

参考

https://mariadb.com/kb/en/library/st_distance/

https://dev.mysql.com/doc/refman/5.7/en/spatial-convenience-functions.html

http://www.innomysql.com/mysql_gis_lbs/

https://blog.csdn.net/zhouzhiwengang/article/details/53612481

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