我还在学习 MySQL,所以请多多包涵……
我有一些表格(如下所述),我想记录错误消息。我不是指查询错误,而只是我的消息,例如“连接到站点失败”、“站点 xyz 上的卡读取错误”等...
我正在考虑使用一个表“error_logs”来跟踪我的错误,只需三列:
- ID
- 错误信息
- 活跃
但是,我遇到的问题是每个错误都与“卡片”、“门”或“站点”表中的记录有关,我想跟踪消息中的哪条记录(来自各种表)属于。
所以,我的问题是解决这个问题的最佳方法是什么?我考虑添加两个额外的列,“record_id”(将引用另一个表中的 id)和“table”(将跟踪消息所属的表)。此外,另一个警告是,未来很可能会有额外的“主”表。
这是我到目前为止的表格:
CREATE TABLE `statuses` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(45) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=latin1$$;
INSERT INTO statuses SET name = 'error';
INSERT INTO statuses SET name = 'pre-install';
INSERT INTO statuses SET name = 'validate';
INSERT INTO statuses SET name = 'active';
INSERT INTO statuses SET name = 'disabled';
CREATE TABLE `sites` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(45) NOT NULL,
`status_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `sites_status_id_idx` (`status_id`),
CONSTRAINT `sites_status_id` FOREIGN KEY (`status_id`) REFERENCES `statuses` (`id`) ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1$$;
CREATE TABLE `doors` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`description` varchar(255) NOT NULL,
`site_id` int(11) NOT NULL,
`status_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `doors_site_id_idx` (`site_id`),
KEY `doors_status_id_idx` (`status_id`),
CONSTRAINT `doors_status_id` FOREIGN KEY (`status_id`) REFERENCES `statuses` (`id`) ON UPDATE CASCADE,
CONSTRAINT `doors_site_id` FOREIGN KEY (`site_id`) REFERENCES `sites` (`id`) ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1$$;
CREATE TABLE `card_types` (
`id` int(11) NOT NULL,
`manufacturer` varchar(45) DEFAULT NULL,
`sequance` varchar(32) DEFAULT NULL,
`auth_code` varchar(32) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1$$;
CREATE TABLE `cards` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`number` int(11) NOT NULL,
`type_id` int(11) NOT NULL,
`status_id` int(11) NOT NULL,
`is_oem` bit(1) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `number_UNIQUE` (`number`),
KEY `cards_type_id_idx` (`type_id`),
KEY `cards_status_id_idx` (`status_id`),
CONSTRAINT `cards_status_id` FOREIGN KEY (`status_id`) REFERENCES `statuses` (`id`) ON UPDATE CASCADE,
CONSTRAINT `cards_type_id` FOREIGN KEY (`type_id`) REFERENCES `card_types` (`id`) ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1$$;
CREATE TABLE `card_assignments` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`door_id` int(11) NOT NULL,
`status_id` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `card_assignments_door_id_idx` (`door_id`),
KEY `card_assignments_status_id_idx` (`status_id`),
CONSTRAINT `card_assignments_door_id` FOREIGN KEY (`door_id`) REFERENCES `doors` (`id`) ON UPDATE CASCADE,
CONSTRAINT `card_assignments_status_id` FOREIGN KEY (`status_id`) REFERENCES `statuses` (`id`) ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1$$;