Hello everyone
Thank you all for your suggestions. I had neither heard of partial
unique indexes nor
considered using COALESCE so I will explore both of these as options
and update the
thread with how it goes.
>Then, if you can define a problem where you feel having a unique table constraint over
>the field is the correct solution [...] you should post the problem and take suggestions on
>ways to solve it.
I am not sure if I have such a problem :) I tried to simplify my
example for the sake of
brevity but if I cannot get the above to work I will post the full problem.
Kind regards
Peter
