Question

This is my script to create the database. Thanks in advance for the help everybody .

The four tables I am inserting data into when the error occurs are :

1. asset
2. asset_details
3. location
4. invoice

---

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';

DROP SCHEMA IF EXISTS `inventory1` ;
CREATE SCHEMA IF NOT EXISTS `inventory1` DEFAULT CHARACTER SET latin1 COLLATE latin1_swedish_ci ;
USE `inventory1` ;

-- -----------------------------------------------------
-- Table `inventory1`.`department`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`department` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`department` (
  `department_id` INT NOT NULL ,
  `department_name` VARCHAR(45) NOT NULL ,
  `job_id` VARCHAR(45) NOT NULL ,
  PRIMARY KEY (`department_id`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`employee`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`employee` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`employee` (
  `employee_id` INT NULL ,
  `department_id` INT NULL ,
  `fname` VARCHAR(45) NULL ,
  `lname` VARCHAR(45) NULL ,
  `email` VARCHAR(45) NULL ,
  `phone_number` VARCHAR(45) NULL ,
  `hire_date` VARCHAR(45) NULL ,
  `job_id` VARCHAR(45) NULL ,
  `manager_id` VARCHAR(45) NULL ,
  PRIMARY KEY (`employee_id`) ,
  INDEX `department_id` (`department_id` ASC) ,
  CONSTRAINT `department_id`
    FOREIGN KEY (`department_id` )
    REFERENCES `inventory1`.`department` (`department_id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`invoice`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`invoice` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`invoice` (
  `invoice_number` VARCHAR(25) NULL ,
  `invoice_date` INT UNSIGNED NULL ,
  `purchase_price` INT UNSIGNED NULL ,
  `quantity` INT UNSIGNED NULL ,
  `order_date` INT UNSIGNED NULL ,
  `vender` INT UNSIGNED NULL ,
  `warranty_end` DATE NULL ,
  `notes` VARCHAR(255) NULL ,
  `vender_name` VARCHAR(45) NULL ,
  PRIMARY KEY (`invoice_number`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`assignment`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`assignment` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`assignment` (
  `assignment_id` INT NOT NULL ,
  `assignment_status` VARCHAR(45) NOT NULL ,
  PRIMARY KEY (`assignment_id`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`asset`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`asset` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`asset` (
  `asset_tag` INT NOT NULL ,
  `cap_ex` VARCHAR(10) NULL ,
  `asset_type_id` INT NULL ,
  `invoice_number` VARCHAR(25) NULL ,
  `status_id` INT NULL ,
  PRIMARY KEY (`asset_tag`) ,
  INDEX `assignment_id` (`status_id` ASC) ,
  CONSTRAINT `invoice_number`
    FOREIGN KEY (`invoice_number` )
    REFERENCES `inventory1`.`invoice` (`invoice_number` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `assignment_id`
    FOREIGN KEY (`status_id` )
    REFERENCES `inventory1`.`assignment` (`assignment_id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`location`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`location` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`location` (
  `location_id` INT NOT NULL ,
  `location_name` VARCHAR(45) NULL ,
  `rack` INT NULL ,
  `row` INT NULL ,
  `unit` INT NULL ,
  PRIMARY KEY (`location_id`) )
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`physical_asset`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`physical_asset` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`physical_asset` (
  `physical_asset_id` INT NOT NULL ,
  `location_id` INT NOT NULL ,
  `employee_id` INT NOT NULL ,
  `physical_asset_name` VARCHAR(45) NOT NULL ,
  PRIMARY KEY (`physical_asset_id`) ,
  INDEX `location_id` (`location_id` ASC) ,
  INDEX `employee_id` (`employee_id` ASC) ,
  CONSTRAINT `location_id`
    FOREIGN KEY (`location_id` )
    REFERENCES `inventory1`.`location` (`location_id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `employee_id`
    FOREIGN KEY (`employee_id` )
    REFERENCES `inventory1`.`employee` (`employee_id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;


-- -----------------------------------------------------
-- Table `inventory1`.`asset_details`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `inventory1`.`asset_details` ;

CREATE  TABLE IF NOT EXISTS `inventory1`.`asset_details` (
  `asset_type_id` INT NULL ,
  `asset-tag` INT NULL ,
  `asset_type` VARCHAR(45) NULL ,
  `physical_asset_id` INT NULL ,
  `manufacturer` VARCHAR(45) NULL ,
  `os` VARCHAR(45) NULL ,
  `os_version` VARCHAR(45) NULL ,
  `make` VARCHAR(45) NULL ,
  `model` VARCHAR(45) NULL ,
  `serial_number` VARCHAR(45) NULL ,
  `processor` VARCHAR(45) NULL ,
  `ram` VARCHAR(45) NULL ,
  `memory` VARCHAR(45) NULL ,
  `hdd` VARCHAR(45) NULL ,
  `host_name` VARCHAR(45) NULL ,
  `notes` VARCHAR(250) NULL ,
  PRIMARY KEY (`asset_type_id`) ,
  INDEX `physical_asset_id` (`physical_asset_id` ASC) ,
  INDEX `asset_tag` (`asset-tag` ASC) ,
  CONSTRAINT `physical_asset_id`
    FOREIGN KEY (`physical_asset_id` )
    REFERENCES `inventory1`.`physical_asset` (`physical_asset_id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `asset_tag`
    FOREIGN KEY (`asset-tag` )
    REFERENCES `inventory1`.`asset` (`asset_tag` )
    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;

Answer 1

You’ll need to be sure that you use AUTO_INCREMENT on your primary keys, otherwise it will try to make them all 0, which it can’t because primary keys have to be unique.