Insert data into 5 tables from a html form - sql

Question

I have a problem how to place an order for a product, and then insert the order into 5 tables that are connected: ONE-TO-MANY, The tables are so connected that when the customer comes in the room, place an order for a product for e.g. coffee, or water it has to show in the orders page who placed the order, in which room does the customer sits and then the waiter gets the order into from the status is the product paid or not.
the tables are:
CREATE TABLE IF NOT EXISTS `user` (
`user_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`type_id` int(10) unsigned NOT NULL,
`username` varchar(50) DEFAULT NULL,
`password` varchar(32) DEFAULT NULL,
`first_name` varchar(100) DEFAULT NULL,
`last_name` varchar(100) DEFAULT NULL,
`email` varchar(50) DEFAULT NULL,
`picture` varchar(200) DEFAULT NULL,
PRIMARY KEY (`user_id`),
UNIQUE KEY `user_index1780` (`username`),
KEY `user_FKIndex1` (`type_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=71 ;
CREATE TABLE IF NOT EXISTS `order` (
`order_id` int(11) NOT NULL AUTO_INCREMENT,
`time` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
`status` int(11) DEFAULT NULL,
`room_id` int(11) NOT NULL,
`user_id` int(10) unsigned NOT NULL,
PRIMARY KEY (`order_id`),
KEY `fk_order_room1` (`room_id`),
KEY `fk_order_user2` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=10 ;
CREATE TABLE IF NOT EXISTS `product` (
`product_id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(100) DEFAULT NULL,
`price` float DEFAULT NULL,
`picture` varchar(500) DEFAULT NULL,
PRIMARY KEY (`product_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=12 ;
CREATE TABLE IF NOT EXISTS `room` (
`room_id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(100) DEFAULT NULL,
`picture` varchar(450) DEFAULT NULL,
`description` text,
`user_id` int(10) unsigned NOT NULL,
PRIMARY KEY (`room_id`),
KEY `fk_room_user1` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;
CREATE TABLE IF NOT EXISTS `item_orders` (
`order_id` int(11) NOT NULL,
`product_id` int(11) NOT NULL,
`quantity` int(11) DEFAULT NULL,
PRIMARY KEY (`order_id`,`product_id`),
KEY `fk_order_has_product_product1` (`product_id`),
KEY `fk_order_has_product_order1` (`order_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
CREATE TABLE IF NOT EXISTS `type_user` (
`type_id` int(10) unsigned NOT NULL,
`name` varchar(20) DEFAULT NULL,
PRIMARY KEY (`type_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Now after I inner join them to place an order for a product nothing's happening.
The query is :
SELECT order.order_id,
user.first_name AS user,
product.name,
product.price,
item_orders.quantity,
product.price * item_orders.quantity AS sum,
room.name,
order.time,
order.status
FROM user, product, room, `order`, item_orders
WHERE user.user_id = room.user_id
AND order.room_id = room.room_id
AND order.order_id = item_orders.order_id
AND product.product_id = item_orders.product_id
This join is just fine it has only to enter a new join order_id = '$order_id' and that is it.

Answer 1

Provided you inserted data in all the tables referenced from your query:
INSERT INTO type_user (type_id) VALUES (1);
INSERT INTO user (user_id, type_id, first_name) VALUES (1, 1, 'cappie');
INSERT INTO room (room_id, user_id, name) VALUES (10, 1, 'Room 10');
INSERT INTO `order` (order_id, room_id, user_id, status) VALUES (1 , 10, 1, 3);
INSERT INTO product (product_id, name, price) VALUES (100, 'Product A', 99.99);
INSERT INTO item_orders (order_id, product_id, quantity) VALUES (1, 100, 15);
The query you provided (in the comments) will run fine and return (almost) correct Results :
| ORDER_ID | USER | NAME | PRICE | QUANTITY | SUM | TIME | STATUS |
--------------------------------------------------------------------------------------------------------------------------
| 1 | cappie | Product A | 99.98999786377 | 15 | 1499.849967956543 | August, 08 2013 07:03:34+0000 | 3 |
You have a floating point rounding error, but that's a story for another day.
Here is the full SQL Fiddle.