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2002-05-24, 14:10 #1
- Join Date
- Feb 2002
- Thanked 0 Times in 0 Posts
multiple-field primary keys with code (Access 2000)
I have a table that relates two other tables in a many-to-many relationship. This is the The Order Details table
in the Northwind sample database relating the Orders and Products tables. Its primary key consists of two fields:
OrderID and ProductID. I have sometimes to put these pirmary keys with code, but i cant do that.
Ususally for the orders table i use the following code
CurrentDb.Execute "CREATE INDEX PrimaryKey ON OrdersTemp (orderid) WITH PRIMARY"
And it works fine.
I cannot apply this code however for the table order details like that:
CurrentDb.Execute "CREATE INDEX PrimaryKey ON [order details] (orderid) WITH PRIMARY"
CurrentDb.Execute "CREATE INDEX PrimaryKey ON [order details] (productid) WITH PRIMARY"
I receice an error 3022 saying that the changes are not successful because they would create duplicate values
in the index,primary key or relationship.
I think i cannot find a way to write multiple key primary codes.
Can i receive some advice is it possible to assign multple keys with the CurrentDb.execute method?
Of course i have no problems in doing it manually,but my question is can i do it by code?
2002-05-24, 14:14 #2
- Join Date
- Mar 2002
- Thanked 29 Times in 29 Posts
Re: multiple-field primary keys with code (Access 2000)
You're trying to create the primary key twice, once for each field. That is not possible.
Instead, create it once with both fields:
CurrentDb.Execute "CREATE INDEX PrimaryKey ON [Order Details] (OrderID, ProductID) WITH PRIMARY"