Dave Smith <[EMAIL PROTECTED]> writes:
> I am trying to add a unique constraint on a column that can be null. The
> documentation states that null is treated as non equal values but I want
> them to be equal. Is there another way of doing this other than writing
> a before insert trigger?
UNIQUE constraints on NULLable columns work fine. It's not clear from
the above what you're looking for.
Are you really saying that you want 'NULL = NULL' to return 't'?
-Doug
---------------------------(end of broadcast)---------------------------
TIP 3: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
