SQL Query with the Northwind database (Catch: no Inner Join) - sql

Question

First and foremost - it is a homework assignment, yet I am not asking for anyone to do it. Instead I need help with how to construct the query.
As part of an assignment, using the Northwind database via Microsoft Access, I have to construct this query:
The product ID, product name, and quantity ordered for all products ordered on an order taken by an employee with last name Fuller.
Now, when I construct the query in design mode, this is the code I get:
SELECT Products.ProductID, Products.ProductName, [Order Details].Quantity
FROM Products INNER JOIN ((Employees INNER JOIN Orders ON Employees.EmployeeID = Orders.EmployeeID) INNER JOIN [Order Details] ON Orders.OrderID = [Order Details].OrderID) ON Products.ProductID = [Order Details].ProductID
WHERE (((Employees.LastName)="Fuller"));
As I mentioned earlier, we are not allowed to use Inner Join. After scouring the text/notes thus far I can't find how to go about it. (Very new to SQL)
Would I be rewriting the FROM statement? And if so, do the SELECT and WHERE statements change?
UPDATE: Here is the code as I rewrote it:
SELECT Orders.OrderID, Orders.CustomerID, Orders.ShipCity
FROM Products, Orders, [Order Details], Employees
WHERE
Products.ProductID = [Order Details].ProductID
AND Employees.EmployeeID = Orders.EmployeeID
AND Ordes.OrderID = [Order Details].OrderID
AND Employees.LastName = "Fuller";
I'm having a sort of syntax issue though. Since the Order Details must be enclosed in brackets, it wants to ask for parameter values for what I wrote in the WHERE statement.

Answer 1

The requirement not to use INNER JOIN is a little peculiar and I cannot guarantee this is what was intended for your assignment.
One way to alternatively write a simplistic relationship between two tables is with an IN () subquery, the general form being:
SELECT *
FROM a_table
WHERE some_column IN (
SELECT some_related_column
FROM b_table
WHERE some_condition
)
But since you must represent columns from more than one of your 4 tables in the SELECT list, that form isn't going to work for you. Another way of not explicitly using an INNER JOIN is to use the older implicit joining syntax, in which multiple tables are listed in the FROM clause separated by commas, and their joining conditions placed in the WHERE clause instead of in ON.
The general form is:
SELECT
a_table.col1,
a_table.col2,
b_table.col1
FROM
a_table,
b_table
WHERE
a_table.some_column = b_table.some_related_column
AND some_other_conditions
It being an assignment, I will leave it to you to work out the entire statement, but yours would take a form like
SELECT
Orders.OrderID,
Orders.CustomerID
FROM
Products,
Orders,
[Order Details],
Employees
WHERE
Products.ProductID = [Order Details].ProductID
AND ... (the other table relationships)
AND Employees.LastName = 'Fuller'
Although it is functionally identical to explicit INNER JOINs, this is an older syntax, and is often discouraged nowadays. More discussion is available in this question