Roman Neuhauser wrote:
> # [EMAIL PROTECTED] / 2006-06-09 10:12:21 +0200:
>> Agent M wrote:
>>> If you don't use NULL, then you don't
>>> come across 3-valued logic--problem solved.
>> So was does "SELECT sum(1) FROM dual WHERE false" return?
>
> You stripped this:
>
>>> Some Tutorial D notions really make sense; I would love to be able
>>> to rely on every function returning a relation.
Yes. I didn't see its relevance to the claim that "if you don't use
null, you will not come across 3-valued logic". My point being that you
need to make sure that your queries don't generate them behind your back
either.
> So your query would prolly return a table with one (INT) column,
> but no rows.
Well, if you are not bound by the SQL standard and its mistakes, the
"obvious" return value would be one row, one column, containing 0.
/Nis
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