How to display combined rows in the database table with same ID - php

Question

i have a question for the experts. I have no idea how to combine all the order ID with the same ID,
like in the picture, all orders with order ID = 1 are in one transaction, how do i combine all order IDs with the same id and display only one total price for all of the proudcts bought. and since all order ID are the same so the deliver and payment option will also be the same just need to display one row.
and a follow up question is how will i also show all the products bought if i combine all the same order IDs, compute the total price and display delivery and payment option in one single row
Here is the picture for my database relationship, i just followed the ones on the internet. the only difference is that "products" are changed to "inventory" and "serial" in products are changed to "prod_id"
here are my codes to display the current picture.
<?php
session_start();
$conn = #mysql_connect("localhost","root","");
$db = #mysql_select_db("");
$qry = "SELECT customers.name,customers.payment,customers.carrier, orders.date, order_detail.productid, order_detail.quantity, order_detail.price, order_detail.orderid, inventory.prod_name
FROM customers
RIGHT JOIN orders on customers.serial=orders.serial
RIGHT JOIN order_detail on orders.serial=order_detail.orderid
LEFT JOIN inventory on order_detail.productid=inventory.prod_id where customers.email='{$_SESSION['email']}'";
mysql_set_charset("UTF8");
$result = #mysql_query($qry);
if($result === FALSE) {
die(mysql_error()); // TODO: better error handling
}
echo "<center>";
echo "<table class='CSSTableGenerator'>
<tr>
<td>Date of Purchase</td>
<td>First Name</td>
<td>Order ID</td>
<td>Products</td>
<td>Quantity</td>
<td>Total Price</td>
<td>Delivery Option</td>
<td>Payment Option</td>
<tr>";
while ($row=mysql_fetch_array($result)){
echo "<tr>";
echo "<td>".$row['date']."</td>";
echo "<td>".$row['name']."</td>";
echo "<td>".$row['orderid']."</td>";
echo "<td>".$row['prod_name']."</td>";
echo "<td>".$row['quantity']."</td>";
echo "<td>".($row['price']*$row['quantity'])."</td>";
echo "<td>".$row['carrier']."</td>";
echo "<td>".$row['payment']."</td>";
echo "</tr>";
}
echo "</table>";
?>
</table>

Answer 1

It seems that what you're needing to learn for this particular question is the SQL Group By clause.
This (untested, might need minor tweaking) should do the trick. Note that you don't get order item quantities out of this, but I would say that it's possible to get them.
SELECT o.date, c.name, o.serial as 'Order Id', GROUP_CONCAT(p.name) as 'Products', SUM(od.price) as 'Total', c.carrier, c.payment
FROM orders o
JOIN customers c on o.customer_id = c.serial
JOIN orderdetail od on o.serial = od.orderid
JOIN products p on od.productid = products.prod_id
GROUP BY o.serial
Of particular note is a handy aggregate function in MySQL called GROUP_CONCAT.
http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat