I've created a model with MySQL Workbench and am now attempting to install it to a mysql server.
Using File > Export > Forward Engineer SQL CREATE Script... it outputs a nice big file for me, with all the settings I ask for. I switch over to MySQL GUI Tools (the Query Browser specifically) and load up this script (note that I'm going form one official MySQL tool to another). However, when I try to actually execute this file, I get the same error over and over
SQLSTATE[HY000]: General error: 1005 Can't create table './srs_dev/location.frm' (errno: 150)
"OK", I say to myself, something is wrong with the location table. So I check out the definition in the output file.
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';
-- -----------------------------------------------------
-- Table `state`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `state` ;
CREATE TABLE IF NOT EXISTS `state` (
`state_id` INT NOT NULL AUTO_INCREMENT ,
`iso_3166_2_code` VARCHAR(2) NOT NULL ,
`name` VARCHAR(60) NOT NULL ,
PRIMARY KEY (`state_id`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `brand`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `brand` ;
CREATE TABLE IF NOT EXISTS `brand` (
`brand_id` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
`name` VARCHAR(45) NOT NULL ,
`domain` VARCHAR(45) NOT NULL ,
`manager_name` VARCHAR(100) NULL ,
`manager_email` VARCHAR(255) NULL ,
PRIMARY KEY (`brand_id`) )
ENGINE = InnoDB;
-- -----------------------------------------------------
-- Table `location`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `location` ;
CREATE TABLE IF NOT EXISTS `location` (
`location_id` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
`name` VARCHAR(255) NOT NULL ,
`address_line_1` VARCHAR(255) NULL ,
`address_line_2` VARCHAR(255) NULL ,
`city` VARCHAR(100) NULL ,
`state_id` TINYINT UNSIGNED NULL DEFAULT NULL ,
`postal_code` VARCHAR(10) NULL ,
`phone_number` VARCHAR(20) NULL ,
`fax_number` VARCHAR(20) NULL ,
`lat` DECIMAL(9,6) NOT NULL ,
`lng` DECIMAL(9,6) NOT NULL ,
`contact_url` VARCHAR(255) NULL ,
`brand_id` TINYINT UNSIGNED NOT NULL ,
`summer_hours` VARCHAR(255) NULL ,
`winter_hours` VARCHAR(255) NULL ,
`after_hours_emergency` VARCHAR(255) NULL ,
`image_file_name` VARCHAR(100) NULL ,
`manager_name` VARCHAR(100) NULL ,
`manager_email` VARCHAR(255) NULL ,
`created_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
PRIMARY KEY (`location_id`) ,
CONSTRAINT `fk_location_state`
FOREIGN KEY (`state_id` )
REFERENCES `state` (`state_id` )
ON DELETE NO ACTION
ON UPDATE NO ACTION,
CONSTRAINT `fk_location_brand`
FOREIGN KEY (`brand_id` )
REFERENCES `brand` (`brand_id` )
ON DELETE NO ACTION
ON UPDATE NO ACTION)
ENGINE = InnoDB;
CREATE INDEX `fk_location_state` ON `location` (`state_id` ASC) ;
CREATE INDEX `fk_location_brand` ON `location` (`brand_id` ASC) ;
CREATE INDEX `idx_lat` ON `location` (`lat` ASC) ;
CREATE INDEX `idx_lng` ON `location` (`lng` ASC) ;
Looks ok to me. I surmise that maybe something is wrong with the Query Browser, so I put this file on the server and try to load it this way
] mysql -u admin -p -D dbname < path/to/create_file.sql
And I get the same error. So I start to Google this issue and find all kinds of accounts that talk about an error with InnoDB style tables that fail with foreign keys, and the fix is to add "SET FOREIGN_KEY_CHECKS=0;" to the SQL script. Well, as you can see, that's already part of the file that MySQL Workbench spat out.
So, my question is then, why is this not working when I'm doing what I think I'm supposed to be doing?
Version Info:
To see foreign key relationships of a table: SELECT TABLE_NAME, COLUMN_NAME, CONSTRAINT_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME FROM INFORMATION_SCHEMA. KEY_COLUMN_USAGE WHERE REFERENCED_TABLE_SCHEMA = 'db_name' AND REFERENCED_TABLE_NAME = 'table_name';
To drop a foreign key from a table, use the ALTER TABLE clause with the name of the table (in our example, student ) followed by the clause DROP CONSTRAINT with the name of the foreign key constraint. In our example, the name of this constraint is fk_student_city_id .
MySQL essentially implements the semantics defined by MATCH SIMPLE , which permits a foreign key to be all or partially NULL . In that case, a (child table) row containing such a foreign key can be inserted even though it does not match any row in the referenced (parent) table.
The type of the field in a foreign key must be the same as the type of the column they're referencing. You have the following (snipping):
CREATE TABLE IF NOT EXISTS `state` (
`state_id` INT NOT NULL AUTO_INCREMENT ,
...
CREATE TABLE IF NOT EXISTS `brand` (
`brand_id` INT UNSIGNED NOT NULL AUTO_INCREMENT ,
...
CREATE TABLE IF NOT EXISTS `location` (
...
`state_id` TINYINT UNSIGNED NULL DEFAULT NULL ,
...
`brand_id` TINYINT UNSIGNED NOT NULL ,
so you're trying to refer to INT
fields (in tables state
and brand
) with TINYINT
fields in table location
. I think that's the error it's complaining about. Not sure how it came up in the first place, or why zeroing out FOREIGN_KEY_CHECKS
doesn't stop MySQL from diagnosing the error, but what happens if you fix this type mismatch?
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