Posted by Tom Moreau on 03/25/06 22:28

I would have tried the code out, but alas - no DDL.

--
Tom

----------------------------------------------------
Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
SQL Server MVP
Columnist, SQL Server Professional
Toronto, ON Canada
www.pinpub.com
..
"Erland Sommarskog" <esquel@sommarskog.se> wrote in message
news:Xns9791CE37C445BYazorman@127.0.0.1...
Tom Moreau (tom@dont.spam.me.cips.ca) writes:
> Don't use the diagram to do this. Use a script:
>
> alter table MyTable
> add
> constraint FK1_MyTable foreign key (Employee1) references Employees
> (EmployeeID)
> on update cascade
> , constraint FK2_MyTable foreign key (Employee2) references Employees
> (EmployeeID)
> on update cascade
>

Alas, this leads to the multiple cascade paths error:

CREATE TABLE Employees (EmployeeID int NOT NULL PRIMARY KEY)

CREATE TABLE MyTable (OrderID int NOT NULL PRIMARY KEY,
Employee1 int NULL,
Employee2 int NULL)
go
alter table MyTable
add
constraint FK1_MyTable foreign key (Employee1) references Employees
(EmployeeID)
on update cascade
, constraint FK2_MyTable foreign key (Employee2) references Employees
(EmployeeID)
on update cascade

go
DROP TABLE MyTable, Employees

Adding a Roles table as usggested by Doug may be a good idea, but it
is not going to resolve this problem, as long as both salesrep and
telemarketing rep are defined in the same table.

The simplest solution, is probably to have employeeids that cannot
change.

--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

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