Jérôme Calais <jerome.calais@arunix.fr> writes:
> I am encountering problems with IN selections.
> I am trying this query :
> delete from status where status_id not in (select distinct status_id
> from company);
I'll bet the sub-select yields some NULL rows? If so, this is not a
bug. NOT IN is not very intuitive about handling of NULLs. I suggest
you consult a SQL textbook ...
regards, tom lane