> if I have a date field that contains a NULL
> will it show up when I ask for a where date range for the same date field.
>
> Where mydate>= "2011/04/01"::date and mydate<= "2011/04/30"::date
>
> With the above where will the NULL's be selected????
>
> I ask because I was always told that a NULL matches everything and nothing!
I think the answer is no.
when mydate is null, record will not be returned.
e.g.,
select 'abc' where (null::date >='2011-01-01'::date) ;
0 rows returned.
Emi
