Cannot Specify Foreign Key Tables When Adding New Foreign Keys

Question

I'm trying to use the Relationships dialog in SQL 2008 to add a new foreign key to a table field. When I go to add one, I am not able to change and specify the Foreign Key Base table or any others in the "Tables and Columns Specification" area...they're all greyed out for those values and uneditable and I"m not sure why.

Answer 1

Have you clicked the ellipsis button to get the wee dialog box?

The section "Tables and Columns Specification" area has a wee button where you choose the tables and columns: you can't enter stuff directly.

Answer 2

Well, this is too visual for me.

ALTER TABLE dbo.MyTable 
  ADD myNewColumn int NOT NULL
go

 ALTER TABLE dbo.MyTable
   ADD CONSTRAINT FK1_MyTable FOREIGN KEY(myNewColum) REFERENCES dbo.myRefTable(ID)
go

If you try this "the thing" may come-up with some kind of an error that describes where the problem is.