无法添加外键约束1215

Question

我收到以下错误：无法添加外键约束（1215） 我正在使用MySQL工作台导出工具“Forward Engineer”来获取代码。

这是我的代码：

SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; 
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; 
SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES'; 

CREATE SCHEMA IF NOT EXISTS `mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ; 
USE `mydb` ; 

CREATE TABLE IF NOT EXISTS `mydb`.`serie` (
    `serieid` INT NOT NULL, 
    `name` VARCHAR(30) NOT NULL, 
    PRIMARY KEY (`serieid`)) 
ENGINE = InnoDB; 

CREATE TABLE IF NOT EXISTS `mydb`.`season` (
    `serieid` INT NOT NULL, 
    `seasonid` INT NOT NULL, 
    `name` VARCHAR(45) NOT NULL, 
    `description` TEXT NULL, 
    PRIMARY KEY (`serieid`, `seasonid`), 
    CONSTRAINT `fk_season_serie` 
    FOREIGN KEY (`serieid`) 
    REFERENCES `mydb`.`serie` (`serieid`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB; 

CREATE TABLE IF NOT EXISTS `mydb`.`episode` (
    `serieid` INT NOT NULL, 
    `seasonid` INT NOT NULL, 
    `episodeid` INT NOT NULL, 
    `title` VARCHAR(100) NOT NULL, 
    `description` TEXT NULL, 
    PRIMARY KEY (`serieid`, `seasonid`, `episodeid`), 
    INDEX `fk_episode_season1_idx` (`seasonid` ASC), 
    CONSTRAINT `fk_episode_serie1` 
    FOREIGN KEY (`serieid`) 
    REFERENCES `mydb`.`serie` (`serieid`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION, 
    CONSTRAINT `fk_episode_season1` 
    FOREIGN KEY (`seasonid`) 
    REFERENCES `mydb`.`season` (`seasonid`) 
    ON DELETE NO ACTION 
    ON UPDATE NO ACTION) 
ENGINE = InnoDB; 

SET SQL_MODE=@OLD_SQL_MODE; 
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS; 
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS; 

我不知道是什么问题，一切似乎没什么问题。任何帮助？ 使用MySQL Workbench创建。

感谢

Answer 1

CREATE TABLE IF NOT EXISTS `mydb`.`episode` (
. . . 
FOREIGN KEY (`seasonid`) 
REFERENCES `mydb`.`season` (`seasonid`) 

这个外键被引用的列不在season表的键最左边的列。