Question

I ran the following simple query that looks like the example below:
(Briefly; one order has from 1 to N items and the foreign key is order_id in table items)

SELECT orders.*, items.*
FROM orders
LEFT JOIN
items ON orders.id= items.order_id

This shows something like:

order.id    item.id
   1           34
   1           22
   1           90
   2           44
   2           19
   2           21
   2           22

I want an output like:

order.id    item.id
   1           34
               22
               90
   2           44
               19
               21
               22

How to achieve that on Access 2007 ?

Thank you in advance,
Miloud B.

Answer 1

The only way I can think of doing this would be a self join with an aggregate. It will be easier/better handled in your application.

SELECT
         IIF( i2.id = MIN(i.id), i.order_id, NULL) AS order_id,
         i2.id AS item_id
FROM     items i
         INNER JOIN orders o
         ON       o.id= i.order_id
         LEFT JOIN items i2
         ON       i2.order_id=i.order_id
GROUP BY i.order_id
ORDER BY i.order_id,
         i2.id