Right!
Now I understand the message Access gives. It's seems that in design view, you can only left join one field, and it does tell you to "add " the other one " in your sql statement":), in fact you add it in "sql view".
It works now.
Thanks for this
>>This must be a "DBMS 101" classic, but I don't seem to be able to figure it out:
>>
>>I have a discount table that has a primary key, a foreign key to customer and a foreign key to the items table. I.e. "some customers have discounts on some items".
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>>I have an order header table that contains a foreign key to the customer and order detail that has a foreign key to the item.
>>
>>I'm trying to build a dbms query or queries (in msaccess) that would join the discount table to the de-normalized order table (I .e. a join of the order header and the order detail on the header key).
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>You have to navigate from the order to the OrderDetail (inner join) , then outer join (there may or may not be a discount) to the discount table using the customer from the order and the item in the OrderDetail
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>
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>select Order.*
> OrderDetail .*,
> Discount.Percent
> from Order
> join OrderDetail on (OrderDetail.Order_fk = Order.pk )
> left join Discount on ( Order.Customer_fk = Discount.Customer_fk )
> and (OrderDetail.Item_fk = Discount.Item_fk )
> where ( Order.pk = ?someOrderPK)
>
If things have the tendency to go your way, do not worry. It won't last. Jules Renard.