如何保存“IN（）”表达式中指向的行顺序？

Question

我有一个实体ID数组 - 我的任务是按照数组中指向的顺序获取实体。我发现“IN（）”和“FIND_IN_SET”的组合可以解决这个问题。

我在QueryBuilder的帮助下在存储库类中构建了一个查询：

$qb = $this->createQueryBuilder('v');
$qb
    ->select('v')
    ->addSelect("FIND_IN_SET('v.id', '$vehiclesStr')")
    ->andWhere('v.id IN(:vehicles)')
    ->setParameter('vehicles', $vehiclesArr)
;

return $qb->getQuery()->getResult();

如您所见，我使用beberlei/DoctrineExtensions中的“FIND_IN_SET”函数。它已根据issue进行了相应注册。

分别假设$vehiclesStr = '219,197,213,198'; $vehiclesArr = [219,197,213,198];

问题 - 订单未保存。我收到以下结果，其中车辆由ASC订购，例如197,198,213 ..：

通过Doctrine更新/构建SQL：

SELECT 
  v0_.vehicle_id AS vehicle_id_0, 
  v0_.number AS number_1, 
  v0_.cargo_movers AS cargo_movers_2, 
  v0_.vat AS vat_3, 
  v0_.bargain AS bargain_4, 
  v0_.cargo_search_radius AS cargo_search_radius_5, 
  v0_.adr AS adr_6, 
  v0_.tir AS tir_7, 
  v0_.passing_cargo AS passing_cargo_8, 
  v0_.description AS description_9, 
  v0_.created_at AS created_at_10, 
  v0_.updated_at AS updated_at_11, 
  v0_.transport_service_id AS transport_service_id_12, 
  v0_.vehicle_photo_id AS vehicle_photo_id_13, 
  v0_.vehicle_driver_id AS vehicle_driver_id_14, 
  v0_.vehicle_type_id AS vehicle_type_id_15, 
  v0_.vehicle_body_size_id AS vehicle_body_size_id_16, 
  v0_.vehicle_full_size_id AS vehicle_full_size_id_17, 
  v0_.vehicle_show_to_cargo_sender_id AS vehicle_show_to_cargo_sender_id_18, 
  v0_.vehicle_body_equipment_id AS vehicle_body_equipment_id_19, 
  v0_.vehicle_loading_type_id AS vehicle_loading_type_id_20, 
  v0_.vehicle_price_around_town_id AS vehicle_price_around_town_id_21, 
  v0_.vehicle_price_out_of_town_id AS vehicle_price_out_of_town_id_22 
FROM 
  vehicle v0_ 
WHERE 
  v0_.vehicle_id IN (?) 
ORDER BY 
  FIND_IN_SET('v.id', '219,188') ASC 

Parameters: [[219, 188]]

Answer 1

您根本没有使用ORDER BY条款。在SELECT条款中添加其他字段不会改变顺序。它会吗？

尝试使用orderBy代替addSelect。

$qb = $this->createQueryBuilder('v');
$qb
    ->select('v')
    ->andWhere('v.id IN(:vehicles)')
    ->setParameter('vehicles', $vehiclesArr)
    ->orderBy("FIND_IN_SET(v.id, '$vehiclesStr')", 'ASC');
;

return $qb->getQuery()->getResult(); 

假设$vehiclesStr当然具有正确的价值。