Question

我试图找到两个lat长对之间的时差ad距离。

我收到一些记录的时间值不正确

SELECT A.ID, A.latitude, A.longitude, A.drive_time, (B.drive_time -     A.drive_time) AS time_difference, 6367 * acos( cos(   
            radians(A.latitude) )   
          * cos( radians(B.latitude) )   
          * cos( radians(B.longitude) - radians(A.longitude)) +   sin(radians(A.latitude))  
          * sin( radians(B.latitude) ) as distance  
    FROM mapper A INNER JOIN mapper B ON B.ID = (A.ID + 1);

Answer 1

别介意我找到了解决办法。

SELECT A.ID, A.latitude, A.longitude, B.drive_time, 6371000 * 2 *     ASIN(SQRT(      
        POWER(SIN((A.latitude - abs(B.latitude)) * pi()/180 / 2),      
        2) + COS(A.latitude * pi()/180 ) * COS(abs(B.latitude) *      
        pi()/180) * POWER(SIN((A.longitude - B.longitude) *      
        pi()/180 / 2), 2) ))  as distance     ,time_to_sec(TIMEDIFF(B.drive_time,A.drive_time)) AS time_difference  
FROM mapper A left JOIN mapper B ON B.ID = A.ID + 1

找出两个Lat-Long对之间的时间差和距离

1 个答案: