MySQL的刪除所有記錄，如果，如果一條記錄有一定的order_status_id

Question

這裏有一個表結構：

order_id | order_status_id |  ip  | date_added 
-----------------------------------------------  
1  | 0    | 192.168.1.1 | 2016-12-07 
2  | 0    | 192.168.1.1 | 2016-12-07 
3  | 0    | 192.168.1.1 | 2016-12-07 
4  | 0    | 192.168.1.1 | 2016-12-07 
5  | 1    | 192.168.1.1 | 2016-12-07 

我有刪除我的情況下，我們刪除與記錄最低的ID值行的SQL請求ORDER_ID = 1,2,3

delete n1 FROM `order` n1, `order` n2 
    WHERE n1.order_id > n2.order_id 
    AND n1.order_status_id = '0' 
    AND n2.order_status_id = '0' 
    AND n1.ip = n2.ip 
    AND Day(n1.date_added) = Day(n2.date_added) 

但我想刪除與order_status_id = 0（1,2,3,4）的所有記錄，如果一條記錄（來自同一個IP/DATE_ADDED）具有order_status_id = 1 （在我的情況下，因爲我們有order_status_id = 1的記錄order_id 5）。

Answer 1

您可以使用join：

delete o 
    from orders o join 
     (select ip, date_added 
      from orders o 
      where order_status_id = 1 
      group by ip, date_added 
     ) oo 
     on o.ip = oo.ip and o.date_added = oo.date_added 
    where o.order_status_id = 0; 

Answer 2

其實還是不知道自己真正想做的事，但試試這個：

DELETE n1 FROM `order` n1 
JOIN (
    SELECT 
     MAX(`order_id`) AS `order_id` 
    FROM `order` o1 
    WHERE 
    (NOT EXISTS(SELECT 1 FROM `order` o2 WHERE o1.`ip` = o2.`ip` AND o1.`date_added` = o2.`date_added` AND o2.`order_status_id` = '1') 
    AND o1.`order_status_id` = '0') 
    OR 
    (EXISTS(SELECT 1 FROM `order` o2 WHERE o1.`ip` = o2.`ip` AND o1.`date_added` = o2.`date_added` AND o2.`order_status_id` = '1') 
     AND o1.`order_status_id` = '1') 
    GROUP BY `ip`, `date_added` 
) n2 
ON n1.`order_id` <> n2.`order_id` 

SqlFiddle demo