MySQL 错误：导入数据库时​​出现 1064

Question

我已经从 MySQL 5.5.40 版本导出了一个数据库，但是当我将它导入 MySQL 5.5.44 时，我收到了关于语法的错误。

CREATE TABLE IF NOT EXISTS `key_value` (
  `collection` varchar(128) CHARACTER SET ascii NOT NULL DEFAULT '' COMMENT 'A named collection of key and value pairs.'
`value` longblob NOT NULL COMMENT 'The value.',
  PRIMARY KEY (`collection`,`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='Generic key-value storage table. See the state system for…';

收到的错误是：

ERROR 1064 (42000): 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 '`value` longblob NOT NULL COMMENT 'The value.',
  PRIMARY KEY (`collection`,`nam' at line 3

请提出建议。

Answer 1

this comment in the drupal.org issue queue 的解决方案是这样的：

改变这个：

CREATE TABLE ``key_value`` ( ``collection`` varchar(128) CHARACTER SET ascii NOT NULL DEFAULT '' COMMENT 'A named collection of key and value pairs.' ``value`` longblob NOT NULL COMMENT 'The value.', PRIMARY KEY (``collection``,``name``) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='Generic key-value storage table. See the state system for…'

到这里：

CREATE TABLE ``key_value`` ( ``collection`` varchar(128) CHARACTER SET ascii NOT NULL DEFAULT '' COMMENT 'A named collection of key and value pairs.', ``name`` varchar(128) CHARACTER SET ascii NOT NULL DEFAULT '' COMMENT 'The key of the key-value pair. As KEY is a SQL reserved keyword, name was chosen instead.', ``value`` longblob NOT NULL COMMENT 'The value.', PRIMARY KEY (``collection``,``name``) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='Generic key-value storage table. See the state system for';

然后在接近尾声时删除它以防止另一个错误：

ALTER TABLE ``key_value`` ADD ``name`` varchar(128) CHARACTER SET ascii NOT NULL DEFAULT '' COMMENT 'The key of the key-value pair. As KEY is a SQL reserved keyword, name was chosen instead.';

Answer 2

您的表中没有 name 列，但您正在使用 PRIMARY KEY (collection,name) 的组合创建主键。所以只需删除名称并尝试。

按照 Khalid 的建议，在集合列之后和值列之前添加“，”。

终于可以使用了-

CREATE TABLE IF NOT EXISTS `key_value` (
  `collection` VARCHAR(128) CHARACTER SET ASCII NOT NULL DEFAULT '' COMMENT 'A named collection of key and value pairs.',
`value` LONGBLOB NOT NULL COMMENT 'The value.',
  PRIMARY KEY (`collection`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4 COMMENT='Generic key-value storage table. See the state system for…';