Question

MySQL错误代码：1822。无法添加外键约束。缺少约束的索引＆＃39; fkUsers6＆＃39;在参考表＆＃39;用户＆＃39;

中

当表中有多个相同类型的外键时发生。有什么想法解决这个问题？我还没找到这个案子的答案......

发生错误的表：

CREATE TABLE IF NOT EXISTS `profiCRM`.`opportunities` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `opportunity_belongsTo` INT NULL,
  `opportunity_description` VARCHAR(45) NOT NULL,
  `opportunity_type` INT NOT NULL,
  `opportunity_stage` INT NOT NULL,
  `opportunity_product` INT NOT NULL,
  `opportunity_volume` INT NOT NULL,
  `opportunity_dateCreated` DATETIME NOT NULL,
  `opportunity_createdFrom` INT NOT NULL,
  `opportunity_datePlannedClosure` DATE NOT NULL,
  `opportunity_dateChanged` DATETIME NULL,
  `opportunity_changedFrom` INT NULL,
  `opportunity_dateClosed` DATETIME NULL,
  `opportunity_closedFrom` INT NULL,
  `opportunity_dateDeleted` DATETIME NULL,
  `opportunity_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`));

创建外键：

ALTER TABLE `profiCRM`.`opportunities`
  ADD INDEX `fkAccounts_idx` (`opportunity_belongsTo` ASC),
  ADD INDEX `fkOpportunityStage_idx` (`opportunity_stage` ASC),
  ADD INDEX `fkOpportunityType_idx` (`opportunity_type` ASC),
  ADD INDEX `fkProducts_idx` (`opportunity_product` ASC),
  ADD INDEX `fkUsers_idx` (`opportunity_createdFrom` ASC, `opportunity_changedFrom` ASC, `opportunity_closedFrom` ASC, `opportunity_deletedFrom` ASC),
  ADD CONSTRAINT `fkAccounts6`
    FOREIGN KEY (`opportunity_belongsTo`)
    REFERENCES `profiCRM`.`accounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  ADD CONSTRAINT `fkOpportunityStage6`
    FOREIGN KEY (`opportunity_stage`)
    REFERENCES `profiCRM`.`opportunityStage` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  ADD CONSTRAINT `fkOpportunityType6`
    FOREIGN KEY (`opportunity_type`)
    REFERENCES `profiCRM`.`opportunityTypes` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  ADD CONSTRAINT `fkProducts6`
    FOREIGN KEY (`opportunity_product`)
    REFERENCES `profiCRM`.`products` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  ADD CONSTRAINT `fkUsers6`
    FOREIGN KEY (`opportunity_createdFrom` , `opportunity_changedFrom` , `opportunity_closedFrom` , `opportunity_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID` , `ID` , `ID` , `ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION;

外键来自的表：

CREATE TABLE IF NOT EXISTS `profiCRM`.`users` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `user_belongsTo` INT NOT NULL,
  `user_firstName` VARCHAR(45) NOT NULL,
  `user_lastName` VARCHAR(45) NOT NULL,
  `user_dateOfBirth` DATE NOT NULL,
  `user_adress1` VARCHAR(45) NOT NULL,
  `user_adress2` VARCHAR(45) NULL,
  `user_department` VARCHAR(45) NOT NULL,
  `user_zipcode` VARCHAR(10) NOT NULL,
  `user_city` VARCHAR(45) NOT NULL,
  `user_state` VARCHAR(45) NULL,
  `user_country` INT NOT NULL,
  `user_email` VARCHAR(45) NOT NULL,
  `user_telephoneFixed` VARCHAR(45) NULL,
  `user_telephoneMobile` VARCHAR(45) NULL,
  `user_rightViewData` INT NOT NULL,
  `user_rightCreateData` TINYINT NULL,
  `user_rightCreateUser` TINYINT NULL,
  `user_rightCreateAttribute` TINYINT NULL,
  `user_rightCreateList` TINYINT NULL,
  `user_rightEditData` TINYINT NULL,
  `user_rightEditUser` TINYINT NULL,
  `user_rightEditAttribute` TINYINT NULL,
  `user_rightEditList` TINYINT NULL,
  `user_rightDeleteData` TINYINT NULL,
  `user_rightDeleteUser` TINYINT NULL,
  `user_rightDeleteAttribute` TINYINT NULL,
  `user_rightDeleteList` TINYINT NULL,
  `user_dateCreated` DATETIME NOT NULL,
  `user_createdFrom` INT NULL,
  `user_dateChanged` DATETIME NULL,
  `user_changedFrom` INT NULL,
  `user_dateDeleted` DATETIME NULL,
  `user_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`));

这里的解决方案:(我必须为每个人定义一个自己的外键单个列表项，可以为一个键选择多个项目在MySQL Workbench中并不是那么有目的）

-- MySQL Script generated by MySQL Workbench
-- Wed Oct 25 14:20:25 2017
-- Model: New Model    Version: 1.0
-- MySQL Workbench Forward Engineering

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';

-- -----------------------------------------------------
-- Schema profiCRM
-- -----------------------------------------------------

-- -----------------------------------------------------
-- Schema profiCRM
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `profiCRM` DEFAULT CHARACTER SET utf8 ;
SHOW WARNINGS;
USE `profiCRM` ;

-- -----------------------------------------------------
-- Table `profiCRM`.`countries`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`countries` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `countryName` VARCHAR(45) NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`users`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`users` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `user_belongsTo` INT NOT NULL,
  `user_firstName` VARCHAR(45) NOT NULL,
  `user_lastName` VARCHAR(45) NOT NULL,
  `user_dateOfBirth` DATE NOT NULL,
  `user_adress1` VARCHAR(45) NOT NULL,
  `user_adress2` VARCHAR(45) NULL,
  `user_department` VARCHAR(45) NOT NULL,
  `user_zipcode` VARCHAR(10) NOT NULL,
  `user_city` VARCHAR(45) NOT NULL,
  `user_state` VARCHAR(45) NULL,
  `user_country` INT NOT NULL,
  `user_email` VARCHAR(45) NOT NULL,
  `user_telephoneFixed` VARCHAR(45) NULL,
  `user_telephoneMobile` VARCHAR(45) NULL,
  `user_rightViewData` INT NOT NULL,
  `user_rightCreateData` TINYINT NULL,
  `user_rightCreateUser` TINYINT NULL,
  `user_rightCreateAttribute` TINYINT NULL,
  `user_rightCreateList` TINYINT NULL,
  `user_rightEditData` TINYINT NULL,
  `user_rightEditUser` TINYINT NULL,
  `user_rightEditAttribute` TINYINT NULL,
  `user_rightEditList` TINYINT NULL,
  `user_rightDeleteData` TINYINT NULL,
  `user_rightDeleteUser` TINYINT NULL,
  `user_rightDeleteAttribute` TINYINT NULL,
  `user_rightDeleteList` TINYINT NULL,
  `user_dateCreated` DATETIME NOT NULL,
  `user_createdFrom` INT NULL,
  `user_dateChanged` DATETIME NULL,
  `user_changedFrom` INT NULL,
  `user_dateDeleted` DATETIME NULL,
  `user_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkCountries_idx` (`user_country` ASC),
  INDEX `fkUsers_idx` (`user_rightViewData` ASC),
  INDEX `fkCorporateAccounts_idx` (`user_belongsTo` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `fkUsersToCreatedFrom_idx` (`user_createdFrom` ASC),
  INDEX `fkUsersToChangedFrom_idx` (`user_changedFrom` ASC),
  INDEX `fkUsersToDeletedFrom_idx` (`user_deletedFrom` ASC),
  CONSTRAINT `fkCountries2`
    FOREIGN KEY (`user_country`)
    REFERENCES `profiCRM`.`countries` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToRightViewData2`
    FOREIGN KEY (`user_rightViewData`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkCorporateAccounts2`
    FOREIGN KEY (`user_belongsTo`)
    REFERENCES `profiCRM`.`corporateAccounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToCreatedFrom2`
    FOREIGN KEY (`user_createdFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToChangedFrom2`
    FOREIGN KEY (`user_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToDeletedFrom2`
    FOREIGN KEY (`user_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`corporateAccounts`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`corporateAccounts` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `corporateAccount_name1` VARCHAR(45) NOT NULL,
  `corporateAccount_name2` VARCHAR(45) NULL,
  `corporateAccount_adress1` VARCHAR(45) NOT NULL,
  `corporateAccount_adress2` VARCHAR(45) NULL,
  `corporateAccount_department` VARCHAR(45) NULL,
  `corporateAccount_zipcode` VARCHAR(10) NOT NULL,
  `corporateAccount_city` VARCHAR(45) NOT NULL,
  `corporateAccount_state` VARCHAR(45) NULL,
  `corporateAccount_country` INT NOT NULL,
  `corporateAccount_parentTo` INT NULL,
  `corporateAccount_childOf` INT NULL,
  `corporateAccount_dateCreated` DATETIME NOT NULL,
  `corporateAccount_dateChanged` DATETIME NULL,
  `corporateAccount_changedFrom` INT NULL,
  `corporateAccount_dateDeleted` DATETIME NULL,
  `corporateAccount_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkCountries_idx` (`corporateAccount_country` ASC),
  INDEX `fkCorporateAccounts_idx` (`corporateAccount_parentTo` ASC),
  INDEX `fkUsers_idx` (`corporateAccount_changedFrom` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `fkUsersDeletedFrom_idx` (`corporateAccount_deletedFrom` ASC),
  INDEX `fkCorporateAccountsToChildOf1_idx` (`corporateAccount_childOf` ASC),
  CONSTRAINT `fkCountries1`
    FOREIGN KEY (`corporateAccount_country`)
    REFERENCES `profiCRM`.`countries` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkCorporateAccountsToParentTo1`
    FOREIGN KEY (`corporateAccount_parentTo`)
    REFERENCES `profiCRM`.`corporateAccounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToChangedFrom1`
    FOREIGN KEY (`corporateAccount_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToDeletedFrom1`
    FOREIGN KEY (`corporateAccount_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkCorporateAccountsToChildOf1`
    FOREIGN KEY (`corporateAccount_childOf`)
    REFERENCES `profiCRM`.`corporateAccounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`accountTypes`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`accountTypes` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `accountType_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`competition`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`competition` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `competition_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`opportunityStage`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`opportunityStage` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `opportunityStage_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`opportunityTypes`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`opportunityTypes` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `opportunityType_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`products`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`products` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `product_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`opportunities`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`opportunities` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `opportunity_belongsTo` INT NULL,
  `opportunity_description` VARCHAR(45) NOT NULL,
  `opportunity_type` INT NOT NULL,
  `opportunity_stage` INT NOT NULL,
  `opportunity_product` INT NOT NULL,
  `opportunity_volume` INT NOT NULL,
  `opportunity_dateCreated` DATETIME NOT NULL,
  `opportunity_createdFrom` INT NOT NULL,
  `opportunity_datePlannedClosure` DATE NOT NULL,
  `opportunity_dateChanged` DATETIME NULL,
  `opportunity_changedFrom` INT NULL,
  `opportunity_dateClosed` DATETIME NULL,
  `opportunity_closedFrom` INT NULL,
  `opportunity_dateDeleted` DATETIME NULL,
  `opportunity_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkAccounts_idx` (`opportunity_belongsTo` ASC),
  INDEX `fkOpportunityStage_idx` (`opportunity_stage` ASC),
  INDEX `fkOpportunityType_idx` (`opportunity_type` ASC),
  INDEX `fkProducts_idx` (`opportunity_product` ASC),
  INDEX `fkUsers_idx` (`opportunity_createdFrom` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `fkUsersToChangedFrom6_idx` (`opportunity_changedFrom` ASC),
  INDEX `fkUsersToClosedFrom6_idx` (`opportunity_closedFrom` ASC),
  INDEX `fkUsersToDeletedFrom6_idx` (`opportunity_deletedFrom` ASC),
  CONSTRAINT `fkAccounts6`
    FOREIGN KEY (`opportunity_belongsTo`)
    REFERENCES `profiCRM`.`accounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkOpportunityStage6`
    FOREIGN KEY (`opportunity_stage`)
    REFERENCES `profiCRM`.`opportunityStage` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkOpportunityType6`
    FOREIGN KEY (`opportunity_type`)
    REFERENCES `profiCRM`.`opportunityTypes` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkProducts6`
    FOREIGN KEY (`opportunity_product`)
    REFERENCES `profiCRM`.`products` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToCreatedFrom6`
    FOREIGN KEY (`opportunity_createdFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToChangedFrom6`
    FOREIGN KEY (`opportunity_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToClosedFrom6`
    FOREIGN KEY (`opportunity_closedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToDeletedFrom6`
    FOREIGN KEY (`opportunity_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`accounts`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`accounts` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `account_belongsTo` INT NOT NULL,
  `account_kindOf` INT NOT NULL,
  `account_name1` VARCHAR(45) NOT NULL,
  `account_name2` VARCHAR(45) NULL,
  `account_adress1` VARCHAR(45) NOT NULL,
  `account_adress2` VARCHAR(45) NULL,
  `account_zipcode` VARCHAR(45) NOT NULL,
  `account_city` VARCHAR(45) NOT NULL,
  `account_state` VARCHAR(45) NULL,
  `account_country` INT NOT NULL,
  `account_email` VARCHAR(45) NULL,
  `account_telephoneFixed` VARCHAR(45) NULL,
  `account_telephoneMobile` VARCHAR(45) NULL,
  `account_fax` VARCHAR(45) NULL,
  `account_internet` VARCHAR(45) NULL,
  `account_childOf` INT NULL,
  `account_parentTo` INT NULL,
  `account_turnover` INT NULL,
  `account_numberEmployees` INT NULL,
  `account_numberSubsidaries` VARCHAR(45) NULL,
  `account_generalInfo` VARCHAR(2000) NULL,
  `account_competition` INT NULL,
  `account_opportunities` INT NULL,
  `account_dateCreated` DATETIME NULL,
  `account_createdFrom` INT NULL,
  `account_dateChanged` DATETIME NULL,
  `account_changedFrom` INT NULL,
  `account_dateDeleted` DATETIME NULL,
  `account_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkUsers_idx` (`account_belongsTo` ASC),
  INDEX `fkCountries_idx` (`account_country` ASC),
  INDEX `fkAccounts_idx` (`account_childOf` ASC),
  INDEX `fkAccountTypes_idx` (`account_kindOf` ASC),
  INDEX `fkCompetition_idx` (`account_competition` ASC),
  INDEX `fkOpportunities_idx` (`account_opportunities` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `FKUsersToCreatedFrom3_idx` (`account_createdFrom` ASC),
  INDEX `fkUsersToChangedFrom3_idx` (`account_changedFrom` ASC),
  INDEX `fkUsersToDeletedFrom3_idx` (`account_deletedFrom` ASC),
  INDEX `fkAccountsToParentTo3_idx` (`account_parentTo` ASC),
  CONSTRAINT `fkUsersToBelongsTo3`
    FOREIGN KEY (`account_belongsTo`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkCountries3`
    FOREIGN KEY (`account_country`)
    REFERENCES `profiCRM`.`countries` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkAccountsToChildOf3`
    FOREIGN KEY (`account_childOf`)
    REFERENCES `profiCRM`.`accounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkAccountTypes3`
    FOREIGN KEY (`account_kindOf`)
    REFERENCES `profiCRM`.`accountTypes` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkCompetition3`
    FOREIGN KEY (`account_competition`)
    REFERENCES `profiCRM`.`competition` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkOpportunities3`
    FOREIGN KEY (`account_opportunities`)
    REFERENCES `profiCRM`.`opportunities` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToCreatedFrom3`
    FOREIGN KEY (`account_createdFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToChangedFrom3`
    FOREIGN KEY (`account_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToDeletedFrom3`
    FOREIGN KEY (`account_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkAccountsToParentTo3`
    FOREIGN KEY (`account_parentTo`)
    REFERENCES `profiCRM`.`accounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`formOfAdress`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`formOfAdress` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `formOfAdress_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`contacts`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`contacts` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `contact_belongsTo` INT NOT NULL,
  `contact_formOfAdress` INT NOT NULL,
  `contact_title` VARCHAR(45) NULL,
  `contact_firstName` VARCHAR(45) NOT NULL,
  `contact_lastName` VARCHAR(45) NOT NULL,
  `contact_function` VARCHAR(45) NOT NULL,
  `contact_department` VARCHAR(45) NOT NULL,
  `contact_telephoneFixed` VARCHAR(45) NULL,
  `contact_telephoneMobile` VARCHAR(45) NULL,
  `contact_email` VARCHAR(45) NULL,
  `contact_fax` VARCHAR(45) NULL,
  `contact_dateOfBirth` DATE NULL,
  `contact_childOf` INT NULL,
  `contact_parentTo` INT NULL,
  `contact_generalInfo` VARCHAR(2000) NULL,
  `contact_dateCreated` DATETIME NULL,
  `contact_createdFrom` INT NULL,
  `contact_dateChanged` DATETIME NULL,
  `contact_changedFrom` INT NULL,
  `contact_dateDeleted` DATETIME NULL,
  `contact_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkAccounts_idx` (`contact_belongsTo` ASC),
  INDEX `fkFormOfAdress_idx` (`contact_formOfAdress` ASC),
  INDEX `fkContacts_idx` (`contact_childOf` ASC),
  INDEX `fkUsers_idx` (`contact_createdFrom` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `fkContactsToParentTo4_idx` (`contact_parentTo` ASC),
  INDEX `fkUsersToChangedFrom4_idx` (`contact_changedFrom` ASC),
  INDEX `fkUsersToDeletedFrom4_idx` (`contact_deletedFrom` ASC),
  CONSTRAINT `fkAccounts4`
    FOREIGN KEY (`contact_belongsTo`)
    REFERENCES `profiCRM`.`accounts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkFormOfAdress4`
    FOREIGN KEY (`contact_formOfAdress`)
    REFERENCES `profiCRM`.`formOfAdress` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkContactsToChildOf4`
    FOREIGN KEY (`contact_childOf`)
    REFERENCES `profiCRM`.`contacts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToCreatedFrom4`
    FOREIGN KEY (`contact_createdFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkContactsToParentTo4`
    FOREIGN KEY (`contact_parentTo`)
    REFERENCES `profiCRM`.`contacts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToChangedFrom4`
    FOREIGN KEY (`contact_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToDeletedFrom4`
    FOREIGN KEY (`contact_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`activityType`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`activityType` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `activityType_description` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`ID`),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC))
ENGINE = InnoDB;

SHOW WARNINGS;

-- -----------------------------------------------------
-- Table `profiCRM`.`activities`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `profiCRM`.`activities` (
  `ID` INT NOT NULL AUTO_INCREMENT,
  `activity_belongsToContact` INT NOT NULL,
  `activity_belongsToUser` INT NULL,
  `activity_type` INT NOT NULL,
  `activity_dateStart` DATETIME NOT NULL,
  `activity_dateEnde` DATETIME NOT NULL,
  `activity_childOf` INT NULL,
  `activity_goal` VARCHAR(2000) NOT NULL,
  `activity_result` VARCHAR(2000) NULL,
  `activity_todo` VARCHAR(2000) NULL,
  `activity_todoTimeframe` DATE NULL,
  `activity_dateCreated` DATETIME NOT NULL,
  `activity_createdFrom` INT NOT NULL,
  `activity_dateChanged` DATETIME NULL,
  `activity_changedFrom` INT NULL,
  `activity_dateClosed` DATETIME NULL,
  `activity_closedFrom` INT NULL,
  `activity_dateDeleted` DATETIME NULL,
  `activity_deletedFrom` INT NULL,
  PRIMARY KEY (`ID`),
  INDEX `fkActivityTypes_idx` (`activity_type` ASC),
  INDEX `fkContacts_idx` (`activity_belongsToContact` ASC),
  INDEX `fkUsers_idx` (`activity_belongsToUser` ASC),
  INDEX `fkActivities_idx` (`activity_childOf` ASC),
  UNIQUE INDEX `ID_UNIQUE` (`ID` ASC),
  INDEX `fkUserToCreatedFrom5_idx` (`activity_createdFrom` ASC),
  INDEX `fkUserToChangedFrom5_idx` (`activity_changedFrom` ASC),
  INDEX `fkUserToClosedFrom5_idx` (`activity_closedFrom` ASC),
  INDEX `fkUserToDeletedFrom5_idx` (`activity_deletedFrom` ASC),
  CONSTRAINT `fkActivityTypes5`
    FOREIGN KEY (`activity_type`)
    REFERENCES `profiCRM`.`activityType` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkContacts5`
    FOREIGN KEY (`activity_belongsToContact`)
    REFERENCES `profiCRM`.`contacts` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUsersToBelongsToUser5`
    FOREIGN KEY (`activity_belongsToUser`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkActivities5`
    FOREIGN KEY (`activity_childOf`)
    REFERENCES `profiCRM`.`activities` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUserToCreatedFrom5`
    FOREIGN KEY (`activity_createdFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUserToChangedFrom5`
    FOREIGN KEY (`activity_changedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUserToClosedFrom5`
    FOREIGN KEY (`activity_closedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fkUserToDeletedFrom5`
    FOREIGN KEY (`activity_deletedFrom`)
    REFERENCES `profiCRM`.`users` (`ID`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
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

从四列opportunities(opportunity_createdFrom, opportunity_changedFrom, opportunity_closedFrom, opportunity_deletedFrom)到（不存在的）索引users (ID , ID , ID , ID)创建外键没有任何意义。实际上，您无法像尝试（无意中）那样创建包含重复列的索引。

您真正想要做的是将opportunities表的四列的分隔外键定义到id表中的users列。

将几个相同类型的外键添加到一个表时出现MySQL错误

1 个答案: