mysql - 为什么我不能对此进行正向工程？

Question

好的，这是更新。我正在使用 MySQL 工作台。这就是我在进行正向工程时所输入的内容。中途你会看到正向工程后的结果。

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';

USE `mh23202` ;

-- -----------------------------------------------------
-- Table `mh23202`.`Patient`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Patient` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Patient` (
  `Patient Number` INT NOT NULL,
  `First Name` TEXT NULL,
  `Last Name` TEXT NULL,
  `Date of Birth` DATE NULL,
  `Phone Number` INT NULL,
  `Email` TEXT NULL,
  `Gender` TEXT NULL,
  `Race` TEXT NULL,
  `Address` TEXT NULL,
  `Reason for Visit` TEXT NULL,
  `Primary Doctor` TEXT NULL,
  PRIMARY KEY (`Patient Number`),
  CONSTRAINT `Visit Number`
    FOREIGN KEY (`Patient Number`)
    REFERENCES `mh23202`.`Visits` (`Visit Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Physician Number`
    FOREIGN KEY (`Patient Number`)
    REFERENCES `mh23202`.`Physician` (`Physician Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Visits`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Visits` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Visits` (
  `Visit Number` INT NOT NULL,
  `Date of Visit` DATE NULL,
  `Time of Visit` TIME NULL,
  `Reason for Visit` TEXT NULL,
  PRIMARY KEY (`Visit Number`),
  CONSTRAINT `Patient Number`
    FOREIGN KEY (`Visit Number`)
    REFERENCES `mh23202`.`Patient` (`Patient Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Physician Number`
    FOREIGN KEY (`Visit Number`)
    REFERENCES `mh23202`.`Physician` (`Physician Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Physician`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Physician` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Physician` (
  `Physician Number` INT NOT NULL,
  `Specialty` TEXT NULL,
  `First name` TEXT NULL,
  `Last Name` TEXT NULL,
  `Date of Birth` DATE NULL,
  `Phone Number` INT NULL,
  `Email` TEXT NULL,
  `Gender` TEXT NULL,
  `Race` TEXT NULL,
  `Address` TEXT NULL,
  PRIMARY KEY (`Physician Number`),
  CONSTRAINT `Visit Number`
    FOREIGN KEY (`Physician Number`)
    REFERENCES `mh23202`.`Visits` (`Visit Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Medication`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Medication` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Medication` (
  `Prescription Number` INT NOT NULL,
  `Prescription Name` TEXT NULL,
  `Units per Day` TEXT NULL,
  `Start Date` DATE NULL,
  `Finish Date` DATE NULL,
  PRIMARY KEY (`Prescription Number`),
  CONSTRAINT `Patient Number`
    FOREIGN KEY (`Prescription Number`)
    REFERENCES `mh23202`.`Patient` (`Patient Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Physician Number`
    FOREIGN KEY (`Prescription Number`)
    REFERENCES `mh23202`.`Physician` (`Physician Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`MedicalRecord`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`MedicalRecord` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`MedicalRecord` (
  `Physician Number` INT NULL,
  `Date of Visit` DATE NULL,
  `Time of Visit` TIME NULL,
  `Reason for Visit` TEXT NULL,
  `Findings` TEXT NULL,
  `Notes` TEXT NULL,
  `Treatment` TEXT NULL,
  `Prescriptions` TEXT NULL,
  `Procedures` TEXT NULL,
  INDEX `Patient Number_idx` (`Physician Number` ASC),
  CONSTRAINT `Patient Number`
    FOREIGN KEY (`Physician Number`)
    REFERENCES `mh23202`.`Patient` (`Patient Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Nurse`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Nurse` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Nurse` (
  `Nurse Number` INT NOT NULL,
  `First Name` TEXT NULL,
  `Last Name` TEXT NULL,
  `Date of Birth` DATE NULL,
  `Phone Number` INT NULL,
  `Email` TEXT NULL,
  `Gender` TEXT NULL,
  `Race` TEXT NULL,
  `Address` TEXT NULL,
  PRIMARY KEY (`Nurse Number`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Secretary`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Secretary` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Secretary` (
  `Secretary Number` INT NOT NULL,
  `First Name` TEXT NULL,
  `Last Name` TEXT NULL,
  `Date of Birth` DATE NULL,
  `Phone Number` INT NULL,
  `Email` TEXT NULL,
  `Gender` TEXT NULL,
  `Race` TEXT NULL,
  `Address` TEXT NULL,
  PRIMARY KEY (`Secretary Number`),
  CONSTRAINT `Visit Number`
    FOREIGN KEY (`Secretary Number`)
    REFERENCES `mh23202`.`Visits` (`Visit Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`ChargeNurse`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`ChargeNurse` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`ChargeNurse` (
  `Charge Nurse Number` INT NOT NULL,
  `First Name` TEXT NULL,
  `Last Name` TEXT NULL,
  `Date of Birth` DATE NULL,
  `Phone Number` INT NULL,
  `Email` TEXT NULL,
  `Gender` TEXT NULL,
  `Race` TEXT NULL,
  `Address` TEXT NULL,
  PRIMARY KEY (`Charge Nurse Number`))
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `mh23202`.`Shifts`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `mh23202`.`Shifts` ;

CREATE TABLE IF NOT EXISTS `mh23202`.`Shifts` (
  `Shift Number` INT NOT NULL,
  `Date of Shift` DATE NULL,
  `Time of Shift` TIME NULL,
  PRIMARY KEY (`Shift Number`),
  CONSTRAINT `Secertary Number`
    FOREIGN KEY (`Shift Number`)
    REFERENCES `mh23202`.`Secretary` (`Secretary Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Physician Number`
    FOREIGN KEY (`Shift Number`)
    REFERENCES `mh23202`.`Physician` (`Physician Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Nurse Number`
    FOREIGN KEY (`Shift Number`)
    REFERENCES `mh23202`.`Nurse` (`Nurse Number`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `Charge Nurse Number`
    FOREIGN KEY (`Shift Number`)
    REFERENCES `mh23202`.`ChargeNurse` (`Charge Nurse Number`)
    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; `

这就是结果。

ERROR: Error 1005: Can't create table 'mh23202.visits' (errno: 121)

CREATE TABLE IF NOT EXISTS `mh23202`.`Visits` (

  `Visit Number` INT NOT NULL,

  `Date of Visit` DATE NULL,

  `Time of Visit` TIME NULL,

  `Reason for Visit` TEXT NULL,

  PRIMARY KEY (`Visit Number`),

  CONSTRAINT `Patient Number`

    FOREIGN KEY (`Visit Number`)

    REFERENCES `mh23202`.`Patient` (`Patient Number`)

    ON DELETE NO ACTION

    ON UPDATE NO ACTION,

  CONSTRAINT `Physician Number`

    FOREIGN KEY (`Visit Number`)

    REFERENCES `mh23202`.`Physician` (`Physician Number`)

    ON DELETE NO ACTION

    ON UPDATE NO ACTION)

ENGINE = InnoDB



SQL script execution finished: statements: 7 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 'mh23202.visits' (errno: 121)





CREATE TABLE IF NOT EXISTS `mh23202`.`Visits` (

  `Visit Number` INT NOT NULL,

  `Date of Visit` DATE NULL,

  `Time of Visit` TIME NULL,

  `Reason for Visit` TEXT NULL,

  PRIMARY KEY (`Visit Number`),

  CONSTRAINT `Patient Number`

    FOREIGN KEY (`Visit Number`)

    REFERENCES `mh23202`.`Patient` (`Patient Number`)

    ON DELETE NO ACTION

    ON UPDATE NO ACTION,

  CONSTRAINT `Physician Number`

    FOREIGN KEY (`Visit Number`)

    REFERENCES `mh23202`.`Physician` (`Physician Number`)

    ON DELETE NO ACTION

    ON UPDATE NO ACTION)

ENGINE = InnoDB



SQL script execution finished: statements: 7 succeeded, 1 failed



Fetching back view definitions in final form.

Nothing to fetch

Answer 1

您的脚本中有很多错误。其中大多数是因为您正在使用 FOREIGN KEY 创建表，但没有指定它们。例如，在下面的引用部分的创建表语句中:

CONSTRAINT `Visit Number`
    FOREIGN KEY () 
    REFERENCES `mh23202`.`Visits` ()

空括号是每个表中的错误。对于外键，它应该具有表中的列名称，并且在 REFERENCES mh23202.Visits () 上，它应该具有来自的列名称那张 table 。

另外，正如评论中所说，您的脚本上只有一个创建表，其他表与第一个表重复。您使用的工具很可能无法正常工作，并尝试仅为一张表创建脚本。

编辑

编辑后，您的创建表命令的字段名称之间会出现空格。它不应该有或应该用 引用。正如您的第一个创建语句:患者编号。