Question

在降低mysql转储文件的内容后，我正在修复具有外键的表时出错。我的目标是小写mysql数据库中的所有结构。我尝试恢复数据库时使用vim来小写mysqldump文件的所有内容，这是我得到的错误。

$  mysql -u [user] -p[password] dme < mysqldump.sql
    ERROR 1005 (HY000) at line 399: Can't create table 'dme.contacts' (errno: 121)

在具有外键约束的任何表上恢复都是错误的。如果我删除每个表的主键后面的行，整个还原工作正常。

我的问题是，导致这种情况的原因是什么？我如何保留外键？

Lowercased.sql示例导致错误（在dme.contacts之前有fyi，有多个表创建得很好。只有具有外键和Contstraints的表有问题。）

drop table if exists `contacts`;
/*!40101 set @saved_cs_client     = @@character_set_client */;
/*!40101 set character_set_client = utf8 */;
create table `contacts` (
  `contactid` int(11) not null auto_increment,
  `firstname` varchar(100) default null,
  `lastname` varchar(100) not null,
  `fullname` varchar(200) not null,
  `dob` datetime default null,
  `sex` char(1) default null,
  `voided` datetime default null,
  `vendorid` int(11) not null,
  `contacttypeid` int(11) default null,
  `comments` varchar(1500) default null,
  primary key (`contactid`),
  key `fk_contacts_vendors` (`vendorid`),
  key `fk_contacts_contacttype` (`contacttypeid`),
  constraint `fk_contacts_contacttype` foreign key (`contacttypeid`) references                 `contacttype` (`contacttypeid`) on delete no action on update no action,
  constraint `fk_contacts_vendors` foreign key (`vendorid`) references `vendors`         (`vendorid`) on delete no action on update no action
) engine=innodb default charset=utf8;
/*!40101 set character_set_client = @saved_cs_client */;

--
-- dumping data for table `contacts`
--

lock tables `contacts` write;
/*!40000 alter table `contacts` disable keys */;
/*!40000 alter table `contacts` enable keys */;
unlock tables;

原始来自mysqldump.sql（无错误）

--
-- Table structure for table `Contacts`
--

DROP TABLE IF EXISTS `Contacts`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `Contacts` (
  `ContactId` int(11) NOT NULL AUTO_INCREMENT,
  `FirstName` varchar(100) DEFAULT NULL,
  `LastName` varchar(100) NOT NULL,
  `FullName` varchar(200) NOT NULL,
  `DOB` datetime DEFAULT NULL,
  `Sex` char(1) DEFAULT NULL,
  `Voided` datetime DEFAULT NULL,
  `VendorID` int(11) NOT NULL,
  `ContactTypeID` int(11) DEFAULT NULL,
  `Comments` varchar(1500) DEFAULT NULL,
  PRIMARY KEY (`ContactId`),
  KEY `FK_Contacts_Vendors` (`VendorID`),
  KEY `FK_Contacts_ContactType` (`ContactTypeID`),
  CONSTRAINT `FK_Contacts_ContactType` FOREIGN KEY (`ContactTypeID`) REFERENCES `ContactType` (`ContactTYpeID`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `FK_Contacts_Vendors` FOREIGN KEY (`VendorID`) REFERENCES `Vendors` (`VendorId`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `Contacts`
--

LOCK TABLES `Contacts` WRITE;
/*!40000 ALTER TABLE `Contacts` DISABLE KEYS */;
/*!40000 ALTER TABLE `Contacts` ENABLE KEYS */;
UNLOCK TABLES;

Answer 1

尝试删除约束名称。样品：

constraint `fk_contacts_contacttype` foreign key (`contacttypeid`) ....

要

constraint foreign key (`contacttypeid`) ...

在MySQL Dump文件中的Lesscased所有文本之后无法创建表

1 个答案: