Question

我试图在MySQL Workbench中设计EER图并继续设计这个错误。我对此非常陌生，所以任何帮助都会受到赞赏，以及我可以用来改进的任何东西。附上的是错误消息和SQL脚本。谢谢！

  ERROR: Error 1005: Can't create table 'mnn09c.ASSIGN' (errno: 150)
  CREATE TABLE IF NOT EXISTS `mnn09c`.`ASSIGN` (
  `ASN_ID` INT NOT NULL,
  `ASN_START_D` DATETIME NOT NULL,
  `ASN_END_D` DATETIME NOT NULL,
  `EMP_ID` INT NOT NULL,
   PRIMARY KEY (`ASN_ID`),
   CONSTRAINT `fk_ASSIGN_PRODUCT1`
    FOREIGN KEY (`ASN_ID`)
    REFERENCES `mnn09c`.`PRODUCT` (`ASN_ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
   ENGINE = InnoDB

   SQL script execution finished: statements: 13 succeeded, 1 failed

   Fetching back view definitions in final form.

   Nothing to fetch

    Executing SQL script in server

   ERROR: Error 1005: Can't create table 'mnn09c.ASSIGN' (errno: 150)

   CREATE TABLE IF NOT EXISTS `mnn09c`.`ASSIGN` (

  `ASN_ID` INT NOT NULL,

   `ASN_START_D` DATETIME NOT NULL,

   `ASN_END_D` DATETIME NOT NULL,

    `EMP_ID` INT NOT NULL,

    PRIMARY KEY (`ASN_ID`),

    CONSTRAINT `fk_ASSIGN_PRODUCT1`

    FOREIGN KEY (`ASN_ID`)

    REFERENCES `mnn09c`.`PRODUCT` (`ASN_ID`)

    ON DELETE NO ACTION

    ON UPDATE NO ACTION)

    ENGINE = InnoDB



    SQL script execution finished: statements: 13 succeeded, 1 failed

   Fetching back view definitions in final form.

   Nothing to fetch
___________________________________________________________

    `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';

    DROP SCHEMA IF EXISTS `mnn09c` ;
    CREATE SCHEMA IF NOT EXISTS `mnn09c` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci 
    ;
    SHOW WARNINGS;
    USE `mnn09c` ;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`PRODUCT`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`PRODUCT` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`PRODUCT` (
    `PROD_ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
    `PROD_DURATION` INT NOT NULL,
    `PROD_EVAL` VARCHAR(45) NOT NULL,
    `ASN_ID` INT NOT NULL,
    PRIMARY KEY (`PROD_ID`))
    ENGINE = InnoDB;

    SHOW WARNINGS;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`ASSIGN`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`ASSIGN` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`ASSIGN` (
      `ASN_ID` INT NOT NULL,
      `ASN_START_D` DATETIME NOT NULL,
      `ASN_END_D` DATETIME NOT NULL,
      `EMP_ID` INT NOT NULL,
      PRIMARY KEY (`ASN_ID`),
      CONSTRAINT `fk_ASSIGN_PRODUCT1`
        FOREIGN KEY (`ASN_ID`)
        REFERENCES `mnn09c`.`PRODUCT` (`ASN_ID`)
        ON DELETE NO ACTION
        ON UPDATE NO ACTION)
    ENGINE = InnoDB;

    SHOW WARNINGS;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`EMPLOYEE`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`EMPLOYEE` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`EMPLOYEE` (
      `EMP_ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
      `EMP_LNAME` VARCHAR(45) NOT NULL,
      `EMP_FNAME` VARCHAR(45) NOT NULL,
      `EMP_ADDR` VARCHAR(45) NOT NULL,
      `DEPT_ID` INT NOT NULL,
      `DIVS_ID` INT NOT NULL,
      PRIMARY KEY (`EMP_ID`),
      INDEX `fk_EMPLOYEE_DEPT_idx` (`DEPT_ID` ASC),
      CONSTRAINT `fk_EMPLOYEE_DEPT`
        FOREIGN KEY (`DEPT_ID`)
        REFERENCES `mnn09c`.`DEPT` (`DEPT_ID`)
        ON DELETE NO ACTION
        ON UPDATE NO ACTION,
      CONSTRAINT `fk_EMPLOYEE_ASSIGN1`
        FOREIGN KEY (`EMP_ID`)
        REFERENCES `mnn09c`.`ASSIGN` (`EMP_ID`)
        ON DELETE NO ACTION
    ON UPDATE NO ACTION)
    ENGINE = InnoDB;

    SHOW WARNINGS;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`DIVISION`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`DIVISION` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`DIVISION` (
      `DIVS_ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
      `DIVS_NAME` VARCHAR(45) NOT NULL,
      `DIVS_URL` VARCHAR(45) NOT NULL,
      `DIVS_EMAIL` VARCHAR(45) NOT NULL,
      `DIVS_LOC` VARCHAR(45) NOT NULL,
      `EMP_ID` INT NOT NULL,
      PRIMARY KEY (`DIVS_ID`),
      UNIQUE INDEX `DIVS_ID_UNIQUE` (`DIVS_ID` ASC),
      UNIQUE INDEX `DIVS_URL_UNIQUE` (`DIVS_URL` ASC),
      UNIQUE INDEX `DIVS_EMAIL_UNIQUE` (`DIVS_EMAIL` ASC),
      INDEX `fk_DIVISION_EMPLOYEE1_idx` (`EMP_ID` ASC),
      CONSTRAINT `fk_DIVISION_EMPLOYEE1`
        FOREIGN KEY (`EMP_ID`)
    REFERENCES `mnn09c`.`EMPLOYEE` (`EMP_ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
    ENGINE = InnoDB;

    SHOW WARNINGS;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`DEPT`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`DEPT` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`DEPT` (
      `DEPT_ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
      `DEPT_NAME` VARCHAR(45) NOT NULL,
      `DEPT_LOCATION` VARCHAR(45) NOT NULL,
      `DEPT_EMAIL` VARCHAR(45) NOT NULL,
      `DEPT_URL` VARCHAR(45) NOT NULL,
      `EMP_ID` INT NOT NULL,
      `DIVS_ID` INT NOT NULL,
      PRIMARY KEY (`DEPT_ID`),
      UNIQUE INDEX `DEPT_ID_UNIQUE` (`DEPT_ID` ASC),
      UNIQUE INDEX `DEPT_EMAIL_UNIQUE` (`DEPT_EMAIL` ASC),
      UNIQUE INDEX `DEPT__UNIQUE` (`DEPT_URL` ASC),
      INDEX `fk_DEPT_DIVISION1_idx` (`DIVS_ID` ASC),
      INDEX `fk_DEPT_EMPLOYEE1_idx` (`EMP_ID` ASC),
      CONSTRAINT `fk_DEPT_DIVISION1`
        FOREIGN KEY (`DIVS_ID`)
        REFERENCES `mnn09c`.`DIVISION` (`DIVS_ID`)
        ON DELETE NO ACTION
        ON UPDATE NO ACTION,
      CONSTRAINT `fk_DEPT_EMPLOYEE1`
        FOREIGN KEY (`EMP_ID`)
        REFERENCES `mnn09c`.`EMPLOYEE` (`EMP_ID`)
        ON DELETE NO ACTION
        ON UPDATE NO ACTION)
    ENGINE = InnoDB;

    SHOW WARNINGS;

    -- -----------------------------------------------------
    -- Table `mnn09c`.`MANAGE`
    -- -----------------------------------------------------
    DROP TABLE IF EXISTS `mnn09c`.`MANAGE` ;

    SHOW WARNINGS;
    CREATE TABLE IF NOT EXISTS `mnn09c`.`MANAGE` (
      `MANAGER_ID` INT UNSIGNED NOT NULL AUTO_INCREMENT,
      PRIMARY KEY (`MANAGER_ID`),
      UNIQUE INDEX `MANAGER_ID_UNIQUE` (`MANAGER_ID` ASC))
    ENGINE = InnoDB;

    SHOW WARNINGS;

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

Answer 1

这是外键错误，这意味着您尝试插入的表或数据违反了某些外键约束。

请参阅：http://dev.mysql.com/doc/refman/5.6/en/innodb-foreign-key-constraints.html

通常这是由第三方程序使用SQL转储创建程序引起的，该程序不知道如何正确转储外键，或者是旧版本的mysqldump。

从头开始下载MySQL 5.5或5.6客户端和mysqldump数据库。

您也可以通过重新排序SQL文件以在ASSIGN表之前创建PRODUCT表来使其工作。

Answer 2

发生此问题是因为多一个外键具有相同的名称！在工作台中，在选择具有FK的表后，转到外键，并更改外键的名称（不是列名，只有FK名）。例如：FK colum name：idUser。 FK名称：idUser。将此表上的FK名称更改为idUserA。在任何其他也使用idUser作为FK的表中，将FK的名称更改为idUserB。 OK？

我希望你能理解我。 =）

ERROR 1005 MySQL Workbench正向工程

2 个答案: