CREATE TABLE `table`.`users` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`username` VARCHAR(50) NOT NULL,
`password` VARCHAR(50) NOT NULL,
`dir` VARCHAR(100) NOT NULL,
PRIMARY KEY (`id`(11))
) ENGINE = MyISAM;
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我收到#1089 - Incorrect prefix key错误,无法弄清楚我做错了什么.请帮忙!