Re: [HACKERS] Severe SUBSELECT bug in 6.5 CVS

Bruce Momjian wrote:

> >     Informix-SE
> >     Oracle8
> >
> > and both of them return 0 rows, like PostgreSQL.
> >
> 
> Yes, this is how I remembered Informix doing it.  
> Returning a NULL in
> the subselect does not match anything, so hopefully we 
> don't have a bug.

What is the general policy? Follow the SQL standard, or do what all the
other databases do?