MySQL은 어떻게 두 좌표 사이의 거리를 계산하고 정렬합니까?

https://dev.mysql.com/doc/refman/5.6/en/spatial-relation-functions-object-shapes.html#function_st-distance

DROP TABLE IF EXISTS `locationpoint`; CREATE TABLE `locationpoint` ( `id` int(11) NOT NULL AUTO_INCREMENT, `province` varchar(20) NOT NULL, `city` varchar(20) NOT NULL, `longitude` double(10, 3) NOT NULL, `latitude` double(10, 3) NOT NULL, PRIMARY KEY (`id`) ) ENGINE = InnoDB AUTO_INCREMENT = 1156 DEFAULT CHARSET = utf8;

INSERT INTO `locationpoint` VALUES (1, '山东', '济南', 116.938477, 36.597889), (2, '河北', '石家庄', 114.477539, 38.030786), (3, '浙江', '杭州', 120.058594, 30.334954), (4, '河南', '郑州', 113.629, 34.744), (5, '安徽省', '合肥', 117.170, 31.520);