使用pdo的预处理语句给出的参数号无效

Question

您好我已经进行了查询以从数据库中选择某些值。不幸的是我收到此错误消息：参数号无效

代码如下：

$vehicles = DB::select( DB::raw("
        SELECT v.id, v.brand, v.type, v.description, v.airco, v.seats, v.hourly_rent 
        FROM vehicle as v 
        WHERE v.id 
        NOT IN((SELECT v.id FROM vehicle as v INNER JOIN reservation as r on r.`vehicle_id` = v.id WHERE r.status_id in(3,4,5) 
        AND (
                (
                    (:start >= r.startdate AND :eind <= r.enddate )
                    OR
                    (:start <= r.startdate AND :eind >= r.enddate ) 
                ) 
                OR
                (
                    (:start >= r.startdate AND :start <= r.enddate)
                    OR
                    (:eind >= r.startdate AND :eind <= r.enddate)
                )
            )
        GROUP BY v.id
        ))"), 
         array(
            'start' => $startdate, 
            'eind' => $enddate
         )
    );

Answer 1

您不能多次使用相同的参数名称。为每个参数指定自己的名称并精确绑定参数数量：

$vehicles = DB::select( DB::raw("
        SELECT v.id, v.brand, v.type, v.description, v.airco, v.seats, v.hourly_rent 
        FROM vehicle as v 
        WHERE v.id 
        NOT IN((SELECT v.id FROM vehicle as v INNER JOIN reservation as r on r.`vehicle_id` = v.id WHERE r.status_id in(3,4,5) 
        AND (
                (
                    (:starta >= r.startdate AND :einda <= r.enddate )
                    OR
                    (:startb <= r.startdate AND :eindb >= r.enddate ) 
                ) 
                OR
                (
                    (:startc >= r.startdate AND :startd <= r.enddate)
                    OR
                    (:eindc >= r.startdate AND :eindd <= r.enddate)
                )
            )
        GROUP BY v.id
        ))"), 
         array(
            'starta' => $startdate, 
            'einda' => $enddate,
            'startb' => $startdate, 
            'eindb' => $enddate,
            'startc' => $startdate, 
            'eindc' => $enddate,
            'startd' => $startdate, 
            'eindd' => $enddate
         )
    );

Answer 2

你真的可以。只需将PDO置于仿真模式即可。