ERROR 1005（HY000）：无法创建表？

Question

我曾经使用过此一十亿次阅读和我不出来...我产生这样的工作台所以它应该工作，但它创建的所有表中，除了版面...它会创建它，如果我删除SECTION和INSTRUCTOR之间的关系，但我需要这种关系才能工作....任何帮助将不胜感激！代码在下面...希望有人能帮助我！谢谢！

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'; 

CREATE SCHEMA IF NOT EXISTS `385_s11_turpinvp` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci ; 
USE `385_s11_turpinvp` ; 

-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`TUTORS` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`TUTORS` (
    `Name` VARCHAR(45) NOT NULL , 
    `Banner_Id` CHAR(8) NOT NULL , 
    `Email` VARCHAR(45) NOT NULL , 
    `Ssn` CHAR(9) NOT NULL , 
    `Address` VARCHAR(45) NOT NULL , 
    `Phone` INT NOT NULL , 
    PRIMARY KEY (`Banner_Id`)) 
ENGINE = InnoDB; 

CREATE UNIQUE INDEX `Ssn_UNIQUE` ON `385_s11_turpinvp`.`TUTORS` (`Ssn` ASC) ; 

CREATE UNIQUE INDEX `Banner_Id_UNIQUE` ON `385_s11_turpinvp`.`TUTORS` (`Banner_Id` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`STUDENTS` 
- - ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`STUDENTS` (
    `Name` VARCHAR(45) NOT NULL , 
    `Banner_Id` CHAR(8) NOT NULL , 
    `Email` VARCHAR(45) NOT NULL , 
    `Phone` INT NOT NULL , 
    PRIMARY KEY (`Banner_Id`)) 
ENGINE = InnoDB; 

CREATE UNIQUE INDEX `Banner_Id_UNIQUE` ON `385_s11_turpinvp`.`STUDENTS` (`Banner_Id` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`INSTRUCTORS` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`INSTRUCTORS` (
    `Name` VARCHAR(45) NOT NULL , 
    `Banner_Id` CHAR(8) NOT NULL , 
    `Email` VARCHAR(45) NOT NULL , 
    PRIMARY KEY (`Banner_Id`, `Name`)) 
ENGINE = InnoDB; 

CREATE UNIQUE INDEX `Banner_Id_UNIQUE` ON `385_s11_turpinvp`.`INSTRUCTORS` (`Banner_Id` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`COURSES` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`COURSES` (
    `Course_Id` VARCHAR(45) NOT NULL , 
    `Course_Name` VARCHAR(45) NOT NULL , 
    PRIMARY KEY (`Course_Id`)) 
ENGINE = InnoDB; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`APPOINTMENTS` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`APPOINTMENTS` (
    `Courses_Course_Id` VARCHAR(45) NOT NULL , 
    `TUTORS_Banner_Id` CHAR(8) NOT NULL , 
    `STUDENTS_Banner_Id` CHAR(8) NOT NULL , 
     `Start_Time` DATETIME NOT NULL , 
    `End_Time` DATETIME NOT NULL , 
    PRIMARY KEY (`Courses_Course_Id`, `TUTORS_Banner_Id`, `STUDENTS_Banner_Id`, `Start_Time`, `End_Time`) , 
    CONSTRAINT `fk_COURSES_has_TUTORS_Courses1` 
    FOREIGN KEY (`Courses_Course_Id`) 
    REFERENCES `385_s11_turpinvp`.`COURSES` (`Course_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_COURSES_has_TUTORS_TUTORS1` 
    FOREIGN KEY (`TUTORS_Banner_Id`) 
    REFERENCES `385_s11_turpinvp`.`TUTORS` (`Banner_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_APPOINTMENTS_STUDENTS1` 
    FOREIGN KEY (`STUDENTS_Banner_Id`) 
    REFERENCES `385_s11_turpinvp`.`STUDENTS` (`Banner_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE) 
ENGINE = InnoDB; 

CREATE INDEX `fk_COURSES_has_TUTORS_TUTORS1` ON `385_s11_turpinvp`.`APPOINTMENTS` (`TUTORS_Banner_Id` ASC) ; 

CREATE INDEX `fk_COURSES_has_TUTORS_Courses1` ON `385_s11_turpinvp`.`APPOINTMENTS` (`Courses_Course_Id` ASC) ; 

CREATE INDEX `fk_APPOINTMENTS_STUDENTS1` ON `385_s11_turpinvp`.`APPOINTMENTS` (`STUDENTS_Banner_Id` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`QUALIFIED` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`QUALIFIED` (
    `Courses_Course_Id` VARCHAR(45) NOT NULL , 
    `TUTORS_Banner_Id` CHAR(8) NOT NULL , 
    PRIMARY KEY (`Courses_Course_Id`, `TUTORS_Banner_Id`) , 
    CONSTRAINT `fk_Courses_has_TUTORS_Courses2` 
    FOREIGN KEY (`Courses_Course_Id`) 
    REFERENCES `385_s11_turpinvp`.`COURSES` (`Course_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_Courses_has_TUTORS_TUTORS2` 
    FOREIGN KEY (`TUTORS_Banner_Id`) 
    REFERENCES `385_s11_turpinvp`.`TUTORS` (`Banner_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE) 
ENGINE = InnoDB; 

CREATE INDEX `fk_Courses_has_TUTORS_TUTORS2` ON `385_s11_turpinvp`.`QUALIFIED` (`TUTORS_Banner_Id` ASC) ; 

CREATE INDEX `fk_Courses_has_TUTORS_Courses2` ON `385_s11_turpinvp`.`QUALIFIED` (`Courses_Course_Id` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`Availability` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`Availability` (
    `Start_Time` DATETIME NOT NULL , 
    `End_time` DATETIME NOT NULL , 
    `TUTORS_Banner_Id` CHAR(8) NOT NULL , 
    PRIMARY KEY (`TUTORS_Banner_Id`, `End_time`, `Start_Time`) , 
    CONSTRAINT `fk_Availability_TUTORS1` 
    FOREIGN KEY (`TUTORS_Banner_Id`) 
    REFERENCES `385_s11_turpinvp`.`TUTORS` (`Banner_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE) 
ENGINE = InnoDB; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`SECTIONS` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`SECTIONS` (
    `COURSES_Course_Id` VARCHAR(45) NOT NULL , 
    `INSTRUCTORS_Name` VARCHAR(45) NOT NULL , 
    `Section_Id` CHAR(1) NOT NULL , 
    PRIMARY KEY (`COURSES_Course_Id`, `INSTRUCTORS_Name`, `Section_Id`) , 
    CONSTRAINT `fk_COURSES_has_ENROLLED_COURSES1` 
    FOREIGN KEY (`COURSES_Course_Id`) 
    REFERENCES `385_s11_turpinvp`.`COURSES` (`Course_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_SECTIONS_INSTRUCTORS1` 
    FOREIGN KEY (`INSTRUCTORS_Name`) 
    REFERENCES `385_s11_turpinvp`.`INSTRUCTORS` (`Name`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE) 
ENGINE = InnoDB; 

CREATE INDEX `fk_COURSES_has_ENROLLED_COURSES1` ON `385_s11_turpinvp`.`SECTIONS` (`COURSES_Course_Id` ASC) ; 

CREATE INDEX `fk_SECTIONS_INSTRUCTORS1` ON `385_s11_turpinvp`.`SECTIONS` (`INSTRUCTORS_Name` ASC) ; 


-- ----------------------------------------------------- 
-- Table `385_s11_turpinvp`.`ENROLLED` 
-- ----------------------------------------------------- 
CREATE TABLE IF NOT EXISTS `385_s11_turpinvp`.`ENROLLED` (
    `STUDENTS_Banner_Id` CHAR(8) NOT NULL , 
    `COURSES_Course_Id` VARCHAR(45) NOT NULL , 
    `SECTIONS_Section_Id` CHAR(1) NOT NULL , 
    PRIMARY KEY (`STUDENTS_Banner_Id`, `COURSES_Course_Id`, `SECTIONS_Section_Id`) , 
    CONSTRAINT `fk_COURSES_has_STUDENTS_STUDENTS1` 
    FOREIGN KEY (`STUDENTS_Banner_Id`) 
    REFERENCES `385_s11_turpinvp`.`STUDENTS` (`Banner_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_ENROLLED_COURSES1` 
    FOREIGN KEY (`COURSES_Course_Id`) 
    REFERENCES `385_s11_turpinvp`.`COURSES` (`Course_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE, 
    CONSTRAINT `fk_ENROLLED_SECTIONS1` 
    FOREIGN KEY (`SECTIONS_Section_Id`) 
    REFERENCES `385_s11_turpinvp`.`SECTIONS` (`Section_Id`) 
    ON DELETE CASCADE 
    ON UPDATE CASCADE) 
ENGINE = InnoDB; 

CREATE INDEX `fk_COURSES_has_STUDENTS_STUDENTS1` ON `385_s11_turpinvp`.`ENROLLED` (`STUDENTS_Banner_Id` ASC) ; 

CREATE INDEX `fk_ENROLLED_COURSES1` ON `385_s11_turpinvp`.`ENROLLED` (`COURSES_Course_Id` ASC) ; 

C REATE INDEX `fk_ENROLLED_SECTIONS1` ON `385_s11_turpinvp`.`ENROLLED` (`SECTIONS_Section_Id` ASC) ; 



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

Answer 1

要获取详细信息，您的外键错误，运行SHOW ENGINE INNODB STATUS\G并期待“国外最新键错误”一节。

它应该告诉你的是，外键是无效的，因为没有对INSTRUCTORS.Name没有唯一索引或主键索引。主键是INSTRUCTORS.(Banner_Id, Name)和你有INSTRUCTORS.Banner_Id唯一索引。您可能需要使用这些列组合的一个外键，或INSTRUCTORS.Name