SQL语法错误 - 找不到错误

Question

CREATE TABLE 'categories'(
    'id' SMALLINT NOT NULL AUTO_INCREMENT, 
    'category' VARCHAR(30) NOT NULL, 
    PRIMARY KEY ('id'), 
    UNIQUE KEY 'category' ('category') 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

CREATE TABLE 'orders' ( 
    'id' INT UNSIGNED NOT NULL AUTO_INCREMENT, 
    'user_id' INT UNSIGNED NOT NULL, 
    'transaction_id' VARCHAR(19) NOT NULL, 
    'payment_status' VARCHAR(15) NOT NULL, 
    'payment_amount' DECIMAL(6,2) UNSIGNED NOT NULL, 
    'payment_date_time' TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    PRIMARY KEY ('id'), 
    KEY 'user_id' ('user_id') 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

CREATE TABLE 'pages' ( 
    'id' MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT, 
    'category_id' SMALLINT UNSIGNED NOT NULL, 
    'title' VARCHAR(100) NOT NULL, 
    'description' TINYTEXT NOT NULL, 
    'content' LONGTEXT NOT NULL, 
    'date_created' TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    PRIMARY KEY ('id'), 
    KEY 'category_id' ('category_id'), 
    KEY 'creation_date' ('date_created') 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

CREATE TABLE 'pdfs' ( 
    'id' SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT, 
    'tmp_name' CHAR(40) NOT NULL, 
    'title' VARCHAR(100) NOT NULL, 
    'description' TINYTEXT NOT NULL, 
    'file_name' VARCHAR(40) NOT NULL, 
    'size' MEDIUMINT UNSIGNED NOT NULL, 
    'date_created' TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    PRIMARY KEY ('id'), 
    UNIQUE KEY 'tmp_name' ('tmp_name'), 
    KEY 'date_created' ('date_created') 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

CREATE TABLE 'users' ( 
    'id' INT UNSIGNED NOT NULL AUTO_INCREMENT, 
    'type' ENUM ('member','admin') NOT NULL, 
    'username' VARCHAR(30) NOT NULL, 
    'email' VARCHAR(80) NOT NULL, 
    'pass' VARBINARY(32) NOT NULL, 
    'first_name' VARCHAR(20) NOT NULL, 
    'last_name' VARCHAR (40) NOT NULL, 
    'date_expires' DATE NOT NULL, 
    'date_created' TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, 
    'date_modified' TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00', 
    PRIMARY KEY ('id'), 
    UNIQUE KEY 'username' ('username'), 
    UNIQUE KEY 'email' ('email') 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

.................................. ...........................................

我找不到这里的SQL错误。

MySQL表示：

＃1064 - 你在你的SQL语法错误; （'id'SMALLINT NOT NULL AUTO_INCREMENT，'category'VARCHAR（30）NOT'on line 1

请帮忙查看对应于您的MySQL服务器版本的手册。我使用的是共享服务器上的MySQL 4.4.x到。

Answer 1

你跟'周围的表和列名，它应该是`（反引号）

CREATE TABLE `categories` 
(`id` SMALLINT NOT NULL AUTO_INCREMENT, 
`category` VARCHAR(30) NOT NULL, 
PRIMARY KEY (`id`), 
UNIQUE KEY `category` (`category`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

Answer 2

摆脱你的单引号或正如@Joachim Isaksson所说的那样，使用反引号`

CREATE TABLE categories (id SMALLINT NOT NULL AUTO_INCREMENT, category VARCHAR(30) NOT NULL, PRIMARY KEY (id), UNIQUE KEY(category) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

此外，下一次，简化您的问题。第一个CREATE TABLE声明有问题。没有必要打印一切。另外一些格式也会很好:-)。