我正在尝试使用 SQL 脚本自动添加往返每个机场的时间表。这是我到目前为止的代码:
INSERT INTO phpvms_schedules (depicao, arricao, distance)
SELECT
depart.icao,
arrive.icao,
ROUND(GreaterCircleNm(depart.lat,depart.lng,arrive.lat,arrive.lng),2) as Nm
FROM phpvms_airports AS depart
INNER JOIN phpvms_airports AS arrive ON depart.icao <> arrive.icao
大圆函数:
DROP FUNCTION IF EXISTS GreaterCircleNm;
DELIMITER go
CREATE FUNCTION GreaterCircleNm( lat1 FLOAT, lon1 FLOAT, lat2 FLOAT, lon2 FLOAT ) RETURNS float
BEGIN
DECLARE pi, q1, dist FLOAT;
SET pi = PI();
SET lat1 = lat1 * pi / 180;
SET lon1 = lon1 * pi / 180;
SET lat2 = lat2 * pi / 180;
SET lon2 = lon2 * pi / 180;
SET q1 = ACOS(sin(lat1)*sin(lat2)+COS(lat1)*COS(lat2)*COS(lon1-lon2));
SET dist = q1*180*60/pi;
RETURN dist;
END;
go
DELIMITER ;
总而言之,我真的需要帮助解决这个错误:
1452 - 无法添加或更新子行:外键约束失败 (
virtu259_phpvms
.phpvms_schedules
, CONSTRAINTphpvms_schedules_ibfk_1
FOREIGN KEY (code
) REFERENCESphpvms_airlines
(code
) ON UPDATE CASCADE)
phpvms_airports:
phpvms_schedules: