我如何在Laravel控制器中查询此mysql查询

Question

很抱歉这个新手问题，我不知道如何将这个mysql查询派生到laravel query-builder中，请检查我的sql查询。预先感谢大家

SELECT vehicle_monitoring.id                              AS monitoring_id, 
       Sum(vehicle_monitoring_details.distance_travelled) AS total_distance, 
       Sum(CASE 
             WHEN vehicle_monitoring_details.purpose = 'Business' THEN 
             vehicle_monitoring_details.distance_travelled 
           END)                                           AS distance_business, 
       Sum(CASE 
             WHEN vehicle_monitoring_details.purpose = 'Private' THEN 
             vehicle_monitoring_details.distance_travelled 
           END)                                           AS distance_private 
FROM   vehicle_monitoring 
       JOIN vehicle_monitoring_details 
         ON vehicle_monitoring_details.vehicle_monitoring_id = 
            vehicle_monitoring.id 
GROUP  BY vehicle_monitoring.id 

Answer 1

尝试一下。我没有对此进行测试，但是应该可以正常工作。请问您是否有任何澄清或问题：

DB::table('vehicle_monitoring')
->join('vehicle_monitoring_details', 
       'vehicle_monitoring_details.vehicle_monitoring_id', 
                                 '=', 'vehicle_monitoring.id')
->groupBy('vehicle_monitoring.id')
->select('vehicle_monitoring.id AS monitoring_id', 
    DB::Raw('Sum(vehicle_monitoring_details.distance_travelled) AS total_distance'), 
    DB::Raw("Sum(CASE 
         WHEN vehicle_monitoring_details.purpose = 'Business' THEN 
         vehicle_monitoring_details.distance_travelled 
          END) AS distance_business"),
    DB::Raw("Sum(CASE 
         WHEN vehicle_monitoring_details.purpose = 'Private' THEN 
         vehicle_monitoring_details.distance_travelled 
       END) AS distance_private")

  )->get();