Paul Vinkenoog wrote:

>
>> I know there is a new feature in fb 2.0 which makes expressions like
>> column =3D NULL
>> valid!
>
> It's not really a feature. It's a syntax relaxation, and as a rule you
> shouldn't use it. It just gives you more rope to hang yourself.

There's also a feature: IS [NOT] DISTINCT FROM predicate.



Dmitry