Tom Lane wrote:
> Josh Berkus <josh@agliodbs.com> writes:
>
>>> quietly removing NULL is maybe good for compatibility but is wrong for
>>> functionality.
>>>
>
>
>> I agree. I wasn't aware of this little misfeature.
>>
>
>
>> Default display for NULL should be a zero-length string.
>>
>
> That's just as broken as Pavel's suggestion. Unless you have something
> that is guaranteed distingishable from the output of any non-null value,
> you really can't make a significant improvement here.
>
> regards, tom lane
>
>
Is this, perhaps, a generalized case of this long-running discussion
from last year?:
http://archives.postgresql.org/pgsql-hackers/2009-03/msg01350.php
Cheers,
Steve