mysql - mysql语法错误

Question

我使用 dbForge (v6) 导出了一个数据库，但整个脚本都存在问题:

USE `global-cms-content2`;
CREATE TABLE `global-cms-content2`.umbracorelationtype (
  ID int(11) NOT NULL AUTO_INCREMENT,
  DUAL bit(1) NOT NULL,
  PARENTOBJECTTYPE char(36) NOT NULL,
  CHILDOBJECTTYPE char(36) NOT NULL,
  NAME varchar(255) NOT NULL,
  ALIAS varchar(100) DEFAULT NULL,
  PRIMARY KEY (ID)
)
ENGINE = INNODB
AUTO_INCREMENT = 2
AVG_ROW_LENGTH = 16384
CHARACTER SET utf8
COLLATE utf8_general_ci;

错误是:

1 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DUAL bit(1) NOT NULL,
  PARENTOBJECTTYPE char(36) NOT NULL,
  CHILDOBJECTTYPE ' at line 3 SQL2.sql 2 1 

即使我使用编辑器手动创建表，也会发生同样的错误。

为什么 MySQL 不能使用它自己的脚本？ 有什么想法吗？

更新:

做到了!

USE `global-cms-content3`;
CREATE TABLE `global-cms-content3`.umbracorelationtype (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `DUAL` bit(1) NOT NULL,
  `PARENTOBJECTTYPE` char(36) NOT NULL,
  `CHILDOBJECTTYPE` char(36) NOT NULL,
  `NAME` varchar(255) NOT NULL,
  `ALIAS` varchar(100) DEFAULT NULL,
  PRIMARY KEY (ID)
)
ENGINE = INNODB
AUTO_INCREMENT = 2
AVG_ROW_LENGTH = 16384
CHARACTER SET utf8
COLLATE utf8_general_ci;

仍然不确定为什么导出脚本或备份数据库脚本不处理保留关键字...无论如何

Answer 1

DUAL 这个词是一个关键字。参见 Keyword list . 试着引用下面这个词:

CREATE TABLE `global-cms-content2`.umbracorelationtype (
  ID int(11) NOT NULL AUTO_INCREMENT,
  `DUAL` bit(1) NOT NULL,
  PARENTOBJECTTYPE char(36) NOT NULL,
  CHILDOBJECTTYPE char(36) NOT NULL,
  NAME varchar(255) NOT NULL,
  ALIAS varchar(100) DEFAULT NULL,
  PRIMARY KEY (ID)
)