php - Laravel - 无效参数编号 : parameter was not defined

Question

在 Laravel 上，为什么会出现错误

Invalid parameter number: parameter was not defined

我已经包含了所有参数。

当我直接在 PHPMyAdmin 上测试时，它工作正常。

代码:

$results = \DB::select('SELECT client_id,
                               date_format(start_date,"%d/%m/%Y") as start_date,
                               date_format(end_date,"%d/%m/%Y") as end_date,
                               first_name, last_name, phone, postcode
                            FROM hire INNER JOIN client ON client.id = hire.client_id
                            where ((:sdate between start_date and end_date OR :edate between start_date and end_date) OR (:sdate <= start_date and end_date <= :edate)) AND car_id = :car_id', [
        'sdate'  => $start_date,
        'edate'  => $end_date,
        'car_id' => $car_id
    ]
);

变量示例:

$start_date = $inputs['start_date'];  //2015-10-27
$end_date = $inputs['end_date'];     //2015-10-27
$car_id = $inputs['car_id'];         //5

Answer 1

您的查询失败，因为您在查询中重复使用了参数。 Laravel 使用 PDO 进行 SQL 查询。根据docs :

You cannot use a named parameter marker of the same name more than once in a prepared statement, unless emulation mode is on.

因此即使它们具有相同的值，您也必须重命名这些参数。

$results = \DB::select('SELECT client_id,
                           date_format(start_date,"%d/%m/%Y") as start_date,
                           date_format(end_date,"%d/%m/%Y") as end_date,
                           first_name, last_name, phone, postcode
                        FROM hire INNER JOIN client ON client.id = hire.client_id
                        where ((:sdate between start_date and end_date OR :edate between start_date and end_date) OR (:sdate2 <= start_date and end_date <= :edate2)) AND car_id = :car_id', [
    'sdate'  => $start_date,
    'sdate2'  => $start_date,
    'edate'  => $end_date,
    'edate2'  => $end_date,
    'car_id' => $car_id
]
);