Subject Re: [firebird-support] Re: Non null column, before insert trigger not filling column, Delphi
Author Mark Rotteveel
> Maybe Firebird is different from Oracle in that I have successfully
> created my ID column as a primary key without the non-null constraint. So, it's
> possible even if not perhaps advisable.

AFAIK yhe primary key in Firebird doesn't need a NOT NULL constraint, as I think the primary key enforces NOT NULL by itself. So if the NOT NULL constraint itself is a cause of the problem, you should be able to leave it out in the case of the primary key.

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