Question

我正在使用PHP-MySQLi-Database-Class（MysqliDb.php）。

我有这个问题，但是Wamp说：

致命错误：准备查询时出现问题

 SELECT car_id FROM gm_cars WHERE car_id NOT IN 
( 
  SELECT reserve_car_id FROM gm_reservations 
 WHERE reserve_dropOff > ? AND reserve_dropOff = ? AND reserve_pickUp )

Erreur desyntaxeprèsde''àlaligne 1 in 第823行C:\wamp\www\work\libs\PHP-MySQLi-Database-Class-master\MysqliDb.php

查询：连接数据库

>$carsBetweenDates = $db->rawQuery
('SELECT car_id FROM gm_cars WHERE car_id NOT IN 
   (SELECT reserve_car_id FROM gm_reservations 
     WHERE reserve_dropOff > ? AND reserve_dropOff <= ? 
     UNION 
     DISTINCT SELECT reserve_car_id FROM gm_reservations 
      WHERE reserve_pickUp >= ? AND reserve_pickUp < ?)', 
      Array('2014-12-20 20:00:00', '2014-12-22 20:00:00', 
      '2014-12-20 20:00:00', '2014-12-22 20:00:00'));

我没有看到错误。非常感谢。抱歉我的英文。

Answer 1

你可以尝试这样调用这个函数：

$db->rawQuery('QUERY', array(), FALSE);

我认为清理会损害您的查询（它可能会删除HTML字符，在您的情况下会＆lt;＆gt;条件）

假设这是班级： https://github.com/joshcam/PHP-MySQLi-Database-Class/blob/master/MysqliDb.php

Answer 2

尝试更改查询以简化查询。首先，将两个表合并为一个，然后反转条件以部分删除“NOT IN”

SELECT gm_cars.car_id 
FROM gm_cars LEFT JOIN gm_reservations
ON gm_cars.car_id = gm_reservations.reserve_car_id
WHERE (reserve_dropOff <= ? OR reserve_dropOff > ?)
    AND (reserve_pickUp < ? OR reserve_pickUp >= ?)
    AND gm_cars.car_id NOT IN Array('...')
GROUP BY gm_cars.car_id

还有一件事，我假设你要替换“？”使用最终查询中的值，如果您想要更通用的查询，可以执行以下操作:( PHP中的示例）

$queryStaff = "SELECT STAFF.id FROM STAFF WHERE name = '" . $your_variable . "'"

Answer 3

一个例子。

$db->rawQuery("SELECT * FROM print_orders WHERE print_guests.id = print_orders.id AND print_order_products.order_id = print_orders.id AND  print_orders.id = ? AND print_guests.email = ?  AND print_order_products.order_id = ? " , array($_POST['orden'], $_POST['email'], $_POST['orden']));

SQL查询rawQuery与PHP-MySQLi-Database-Class

3 个答案: