Forum PHP.pl

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 `address_db` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
USE `address_db`;

-- -----------------------------------------------------
-- Table `address_db`.`city`
-- -----------------------------------------------------
CREATE  TABLE IF NOT EXISTS `address_db`.`city` (
  `id` INT NOT NULL ,
  `name` VARCHAR(45) NULL ,
  PRIMARY KEY (`id`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `address_db`.`address`
-- -----------------------------------------------------
CREATE  TABLE IF NOT EXISTS `address_db`.`address` (
  `id` INT NOT NULL ,
  `city` VARCHAR(45) NULL ,
  INDEX `fk_address_city` (`city` ASC) ,
  PRIMARY KEY (`id`) ,
  CONSTRAINT `fk_address_city`
    FOREIGN KEY (`city` )
    REFERENCES `address_db`.`city` (`id` )
    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;

Error

SQL query:

-- -----------------------------------------------------
-- Table `address_db`.`address`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `address_db`.`address` (
`id` INT NOT NULL ,
`city` VARCHAR( 45 ) NULL ,
INDEX `fk_address_city` ( `city` ASC ) ,
PRIMARY KEY ( `id` ) ,
CONSTRAINT `fk_address_city` FOREIGN KEY ( `city` ) REFERENCES `address_db`.`city` (
`id`
) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE = InnoDB;

MySQL said:  
#1005 - Can't create table 'address_db.address' (errno: 150)