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我有一個問題的兩個表:混亂mysql的問題
CREATE TABLE IF NOT EXISTS `addresses` (
`adr_id` int(11) NOT NULL auto_increment,
`per_id` int(11) NOT NULL,
`adr_street` varchar(50) NOT NULL,
`adr_houseno` int(11) default NULL,
`adr_housenoadd` varchar(10) default NULL,
`adr_postalcode` varchar(25) NOT NULL,
`adr_city` varchar(20) NOT NULL,
`adr_type` varchar(45) default NULL,
`cnt_id` int(11) NOT NULL,
`adr_date` date default NULL,
`sys-mut-dt` timestamp NULL default NULL,
`sys-mut-user` varchar(20) default NULL,
`sys-mut-id` int(11) NOT NULL default '0',
PRIMARY KEY (`adr_id`),
KEY `per_id` (`per_id`),
KEY `cnt_id` (`cnt_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 ;
--
-- RELATIES VOOR TABEL `addresses`:
-- `cnt_id`
-- `countries` -> `cnt_id`
-- `per_id`
-- `persons` -> `per_id`
--
CREATE TABLE `events` (
`evt_id` int(11) NOT NULL auto_increment,
`evt_name` varchar(50) NOT NULL,
`evt_description` varchar(100) default NULL,
`evt_startdate` date NOT NULL,
`evt_enddate` date default NULL,
`evt_starttime` time default NULL,
`evt_endtime` time default NULL,
`evt_amtpersons` int(11) default NULL,
`sts_id` int(11) NOT NULL,
`adr_id` int(11) default NULL,
`evt_amtPersonsSubs` tinyint(4) NOT NULL default '0',
`evt_photo` varchar(50) default NULL,
`sys-mut-dt` timestamp NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
`sys-mut-user` varchar(20) default NULL,
`sys-mut-id` int(11) NOT NULL default '0',
PRIMARY KEY (`evt_id`),
KEY `sts_id` (`sts_id`),
KEY `adr_id` (`adr_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
的問題是,當我嘗試刪除地址表中的記錄,我得到以下錯誤
DELETE
FROM addresses
WHERE per_id = 45
1451 - Cannot delete or update a parent row: a foreign key constraint fails (`site/events`, CONSTRAINT `adr_id` FOREIGN KEY (`adr_id`) REFERENCES `addresses` (`adr_id`) ON DELETE NO ACTION ON UPDATE NO ACTION) ;
怪異事情是在事件表中沒有與per_id或adr_id相同的記錄。
那麼這裏發生了什麼?
我該如何解決這個問題? ;-)
/* I think it means "How can I solve this?" */