Warning: file_get_contents(/data/phpspider/zhask/data//catemap/8/mysql/56.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Mysql 替代配方_Mysql - Fatal编程技术网

Mysql 替代配方

Mysql 替代配方,mysql,Mysql,有没有办法重新安排此查询 是否作为复合查询 SELECT motor_car, COUNT(engine_type) FROM ford_cars GROUP BY motor_car HAVING COUNT(engine_type) >= ALL (SELECT COUNT(engine_type) FROM ford_cars GROUP BY motor_car); 这个问题试图达到的目的是给汽车 以及车辆型号的发动机类型数

有没有办法重新安排此查询 是否作为复合查询

SELECT motor_car, COUNT(engine_type)
FROM ford_cars
GROUP BY motor_car
HAVING COUNT(engine_type) >= ALL
       (SELECT COUNT(engine_type)
        FROM ford_cars
             GROUP BY motor_car);
这个问题试图达到的目的是给汽车 以及车辆型号的发动机类型数 可用的发动机类型最多

非常感谢
Ben

不确定您想要实现的目标是什么,以下是如何获得具有最多不同发动机类型的
汽车

  SELECT motor_car, COUNT(DISTINCT engine_type) AS cnt
    FROM ford_cars
GROUP BY motor_car
ORDER BY cnt DESC
   LIMIT 1
这就是你要找的吗?如果没有,与之有何区别