Mybatis根據經度、緯度查詢距離最近一個位置（Mysql ）

<!--查詢距離最近一個位置的接口-->
<select id="getNearPosition" parameterType="com.king.dto.PositionNearQueryDTO"
        resultMap="PositionNearResDTO">
    SELECT
        ACOS(
        SIN((CAST(#{latitude} AS DECIMAL(5,2)) * 3.1415) / 180 ) *
        SIN((CAST(t.latitude AS DECIMAL(5,2)) * 3.1415) / 180 ) +
        COS((CAST(#{latitude} as decimal(5,2)) * 3.1415) / 180 ) *
        COS((CAST(t.latitude AS DECIMAL(5,2)) * 3.1415) / 180 ) *
        COS((CAST(#{longitude} AS DECIMAL(5,2)) * 3.1415) / 180 - (CAST(t.longitude AS DECIMAL(4,2)) * 3.1415) / 180 )
        ) * 6380 AS distance,
        t1.position_logo,
        t1.position_name,
        t1.position_code,
        t1.province_code,
        t1.city_code,
        t1.district_code,
        t1.detail_address, 
        t.longitude,
        t.latitude,
        IF(t.`position` is null, '', t.`position`) as `position`,
        IF(t.`point_offset` is null, '', t.`point_offset`) as `point_offset`,
        t.operator
    FROM
        tb_position_config t
    INNER JOIN tb_position t1 on t1.position_code = t.position_code
    WHERE
        t1.deleted = 0
        AND t.latitude is not null AND t.latitude != ''
        AND t.longitude is not null AND t.longitude != ''
    ORDER BY CAST(distance AS decimal(15,2)) ASC
    LIMIT 0,1
</select>