Question

I have a query that allows me to retrieve customer orders.

Select ID, OrderID, Item, Price from customerOrders
Where Order = 1

is there a way of totalling up the final amount to pay and have it visible below, but still be able to view all details needed in the sql query, for example

ID    |  OrderID |  Item  | Price
1     |   1      |  Book  | 9.99
2     |   1      |  DVD   | 12.99

                    total = 22.98

Many thanks in advance

Answer 1

Two steps:

1, To generate the SUM, you need to add it to the result set using UNION ALL. UNION adds a DISTINCT operation which isn’t required, even if in your case it won’t change the result.

Select ID, OrderID, Item, Price from customerOrders
Where [Order] = 1
UNION ALL
Select NULL, NULL, NULL, SUM(Price) from customerOrders
Where [Order] = 1
ORDER BY CASE WHEN ID IS NULL THEN 2 ELSE 1 END, ID;

2, To sort it in the order you want (sum at the bottom), you can use the NULL ID as an identifier.