• MySQL根据经纬度按距离排序


    1、新建表

    DROP TABLE IF EXISTS `customer`;
    CREATE TABLE `customer` (
      `id` int(11) unsigned NOT NULL auto_increment COMMENT '自增主键',
      `name` varchar(50) NOT NULL COMMENT '名称',
      `lon` double(9,6) NOT NULL COMMENT '经度',
      `lat` double(8,6) NOT NULL COMMENT '纬度',
      PRIMARY KEY  (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8 COMMENT='商户表';

    2、插入数据

    INSERT INTO `customer` VALUES ('1', '天津市区', '117.315575', '39.133462');
    INSERT INTO `customer` VALUES ('2', '北京市区', '116.407999', '39.894073');
    INSERT INTO `customer` VALUES ('3', '保定', '115.557124', '38.853490');
    INSERT INTO `customer` VALUES ('4', '石家庄', '114.646458', '38.072369');
    INSERT INTO `customer` VALUES ('5', '昌平区1', '116.367180', '40.009561');
    INSERT INTO `customer` VALUES ('6', '海淀区2', '116.313425', '39.973078');
    INSERT INTO `customer` VALUES ('7', '海淀区1', '116.329236', '39.987231');

    3、计算方法

    一:

    SELECT
        *,
        ROUND(
            6378.138 * 2 * ASIN(
                SQRT(
                    POW(
                        SIN(
                            (
                                40.0497810000 * PI() / 180 - lat * PI() / 180
                            ) / 2
                        ),
                        2
                    ) + COS(40.0497810000 * PI() / 180) * COS(lat * PI() / 180) * POW(
                        SIN(
                            (
                                116.3424590000 * PI() / 180 - lon * PI() / 180
                            ) / 2
                        ),
                        2
                    )
                )
            )
        ) AS juli
    FROM
        customer
    ORDER BY
        juli ASC

    二:

    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。
    SELECT
        *,
        (st_distance (point (lon,lat),point (116.3424590000,40.0497810000))*111195/1000 )as juli
    FROM
        customer
    ORDER BY
        juli ASC    
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  • 原文地址:https://www.cnblogs.com/chbyl/p/13041103.html
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