＃1072鍵列不存在MySQL外鍵錯誤

我創建的表像這樣和創建表「愛好」時遇到錯誤1072

CREATE TABLE IF NOT EXISTS `project_r`.`user` (
    `user_id` INT NOT NULL , 
    `password` VARCHAR(45) NOT NULL , 
    `RealName` VARCHAR(45) NOT NULL , 
    `FamilyName` VARCHAR(45) NOT NULL , 
    `birthdate` VARCHAR(45) NOT NULL , 
    `Homecity` VARCHAR(45) NOT NULL , 
    `school_id` INT NOT NULL , 
    `school_enteryear` INT NOT NULL , 
    `email` VARCHAR(45) NULL , 
    `activestat` VARCHAR(45) NULL , 
    `onlinestat` VARCHAR(45) NULL , 
    `regtime` DATETIME NOT NULL , 
    `avatar` VARCHAR(45) NULL , 
    `status` VARCHAR(45) NULL , 
    `desc` VARCHAR(45) NULL , 
    `self_comment` VARCHAR(45) NULL , 
    `userMsg_id` INT NOT NULL , 
    PRIMARY KEY (`user_id`) , 
    INDEX `fk_user_school1_idx` (`school_id` ASC) , 
    CONSTRAINT `fk_user_school1` 
    FOREIGN KEY (`school_id`) 
    REFERENCES `project_r`.`school` (`school_id`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB;

然後和創造附加表「愛好」

CREATE TABLE IF NOT EXISTS `project_r`.`hobbies` (
    `hobby_user_id` INT NOT NULL , 
    `favorite_music` VARCHAR(45) NULL , 
    `favorite_game` VARCHAR(20) NULL , 
    `favorite_film` VARCHAR(45) NULL , 
    `favorite_book` VARCHAR(45) NULL , 
    `favorite_sport` VARCHAR(45) NULL , 
    `favorite_cartoon` VARCHAR(45) NULL , 
    `hobby` VARCHAR(45) NULL , 
    PRIMARY KEY (`user_id`) , 
    INDEX `fk_user_id` (`hobby_user_id` ASC) , 
    CONSTRAINT `fk_user_id` 
    FOREIGN KEY (`hobby_user_id`) 
    REFERENCES `project_r`.`user` (`user_id`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB;

都自動遞增的事物或不是或索引添加到引用表不起作用。 thx尋求幫助。

來源

2012-12-11 Flora Mitchell