JOIN four tables to create an restaurant menustructure - mysql

Question

I have four tables I would like to join to the tables in the picture below
This is what i have come up with for now:
SELECT
category.category_id,
category.name,
menuitems.name AS menu_name,
restaurant.restaurant_id
FROM
category
JOIN
restaurant_has_category
ON
category.category_id = restaurant_has_category.category_id
AND
restaurant_has_category.category_id = category.category_id
JOIN
restaurant
JOIN
menuitems
The result is this:
As you can see I'm getting duplicates and the query thinks that the category name and menuItem name aren't distinct. I would love to show which categories a restaurant have AND then I would love to show all the different menuItems in each category
In the writing of this I realise that I need a separate query for all my menuItems ?
Can you see what im going for ? and my problem?
AS REQUESTED HERE IS THE CODE instead of pictures
CREATE TABLE IF NOT EXISTS `category` (
`category_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` VARCHAR(100) NOT NULL,
`description` MEDIUMTEXT,
`image` VARCHAR(255),
PRIMARY KEY (`category_id`)
);
CREATE TABLE IF NOT EXISTS `restaurant` (
`restaurant_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` VARCHAR(150) NOT NULL,
`description` MEDIUMTEXT NOT NULL,
`image` VARCHAR(255),
`URL` VARCHAR(255),
`email` VARCHAR(100),
`openingHours` VARCHAR(255),
`CVR` INT(45),
`telephone` INT(45),
`place_id` INT(10) NOT NULL,
PRIMARY KEY (`restaurant_id`),
FOREIGN KEY (`place_id`) REFERENCES place(`place_id`)
);
CREATE TABLE IF NOT EXISTS `restaurant_has_category` (
`restaurant_id` INT(10) UNSIGNED NOT NULL,
`category_id` INT(10) NOT NULL,
PRIMARY KEY (`restaurant_id`, `category_id`),
FOREIGN KEY (`restaurant_id`) REFERENCES restaurant(`restaurant_id`),
FOREIGN KEY (`category_id`) REFERENCES category(`category_id`)
);
CREATE TABLE IF NOT EXISTS `menuItems` (
`menuItems_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` VARCHAR(255) NOT NULL,
`toppings` VARCHAR(250),
`price` INT(10) NOT NULL,
`size` VARCHAR(50) NOT NULL,
`category_id` INT(10) NOT NULL,
PRIMARY KEY (`menuItems_id`),
FOREIGN KEY (`category_id`) REFERENCES category(`category_id`)
);
Here are som sample data to play around with;
INSERT INTO `menuitems` (`menuItems_id`, `name`, `toppings`, `price`,
`size`, `category_id`) VALUES
(1, 'Margherita', 'Tomatsovs, Ost', 55, '1pers', 1),
(4, 'Cheese Burger', 'Ost, salat, oksebøf', 89, '', 3),
(7, 'Durum rulle', 'Kebab, salat, tomat, agurk, skinke', 67, '', 2);
INSERT INTO `category` (`category_id`, `name`, `description`, `image`)
VALUES
(1, 'Pizza', 'beskrivelse', 'foto'),
(2, 'Ruller', 'beskrivelse', 'foto'),
(3, 'Burger', 'beskivelse', 'foto');
INSERT INTO `restaurant_has_category` (`restaurant_id`, `category_id`)
VALUES
(2, 1),
(2, 2),
(2, 3);
INSERT INTO `restaurant` (`restaurant_id`, `name`, `description`, `image`,
`URL`, `email`, `openingHours`, `CVR`, `telephone`, `place_id`) VALUES
(2, 'Alforno Pizza', 'Lorem ipsum dolor, description text here',
'https://migogkbh.dk/wp-content/uploads/2018/10/Kiin-Kiin-Bao-Bao-Foto-
Rasmus-Schou.jpg', 'hjemmeside', 'email#email.com', 'mo - th: 09:00', 0,
11223344, 1);
THIS IS THE FORMAT I'M SEEKING
category_id | category.name | menu_name | restaurant_id
1 Pizza Margherita 2
1 Pizza Kebab pizza 2
2 Burger Kebab burger 2
2 Burger Cheese burger 2
3 Durum kebab 2

Answer 1

You are getting duplication and misinformation because restaurant and menuitems are cross-joined to each other and the other tables. Fix your FROM clause and you will get the data you expect.
You can find basic SQL tutorials all over the web. My favorite beginner SQL training is at W3CSchools.com. But don't stop there. You should also try to understand set relationships and how those are defined in terms of SQL code. I find presentations that use Venn diagrams can be helpful.