功能ST_Distance_Sphere不存在MariaDB的

Question

我想避开我的位置的所有位置，但ST_Distance_Sphere不能正常工作的功能。

我的查询：

select *, astext(location) as location from `locations`
where ST_Distance_Sphere(location, POINT(35.905069591297, 49.765869174153)) < 1000

错误：

SQLSTATE[42000]: Syntax error or access violation:
1305 FUNCTION app.ST_Distance_Sphere does not exist (SQL:
select *, astext(location) as location from `locations`
where ST_Distance_Sphere(location, POINT(35.905069591297, 49.765869174153)) < 1000)

Answer 1

我的回答对DBA.SE直接复制，

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几乎令人难以置信，MariaDB lacks this ST_Distance_Sphere (MDEV-13467)。

查找their support matrix here。

而且它不只是要么，它也缺乏ST_GeoHash是MySQL有。

Answer 2

对于那些谁仍然需要MariaDB的功能，您可以根据公式创建函数

    CREATE FUNCTION `st_distance_sphere`(`pt1` POINT, `pt2` POINT) RETURNS 
    decimal(10,2)
    BEGIN
    return 6371000 * 2 * ASIN(SQRT(
       POWER(SIN((ST_Y(pt2) - ST_Y(pt1)) * pi()/180 / 2),
       2) + COS(ST_Y(pt1) * pi()/180 ) * COS(ST_Y(pt2) *
       pi()/180) * POWER(SIN((ST_X(pt2) - ST_X(pt1)) *
       pi()/180 / 2), 2) ));
    END

Answer 3

我认为这是它ST_DISTANCE https://mariadb.com/kb/en/library/st_distance/