7

我想删除其中types找不到的 id，types_photos但我不知道如何完成此操作。id_typein与intypes_photos相同。表的结构如下所示：idtypes

CREATE TABLE IF NOT EXISTS `types` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `id_user_added` int(11) DEFAULT '0',
  `id_user_edited` int(11) DEFAULT '0',
  `data_name` text NOT NULL,
  `data_name_seo` text NOT NULL,
  `data_type` enum('tag','equipment','search') NOT NULL,
  `datetime_added` datetime NOT NULL,
  `datetime_edited` datetime NOT NULL,
  `ipaddress_added` text NOT NULL,
  `ipaddress_edited` text NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `id` (`id`)
)

CREATE TABLE IF NOT EXISTS `types_photos` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `id_user_added` int(11) DEFAULT '0',
  `id_user_edited` int(11) DEFAULT '0',
  `id_type` int(11) DEFAULT '0',
  `id_photo` int(11) DEFAULT '0',
  `datetime_added` datetime NOT NULL,
  `datetime_edited` datetime NOT NULL,
  `ipaddress_added` text NOT NULL,
  `ipaddress_edited` text NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `id` (`id`)
)

所以，我的问题是；我怎样才能删除所有types找不到的ID types_photos？

4

1 回答 1

20 
DELETE FROM types 
WHERE id NOT IN (
  SELECT ID FROM types_photos
)
于 2013-10-20T20:38:33.370 回答