Re: [HACKERS] Subselects and NOTs

Meskes, Michael wrote:
>
> Exactly the same with the latest Oracle7 version.

I also get the same results with Sybasem, with one interesting
exception.  Sybase will not let me select * in a subquery!  It gives
me the following:

The symbol '*' can only be used for a subquery select list when the subquery is
introduced with EXISTS or NOT EXISTS.

changing this to "select b from b" seems to work though.

Ocie

>
> Michael
>
> --
> Dr. Michael Meskes, Project-Manager    | topsystem Systemhaus GmbH
> meskes@topsystem.de                    | Europark A2, Adenauerstr. 20
> meskes@debian.org                      | 52146 Wuerselen
> Go SF49ers! Go Rhein Fire!             | Tel: (+49) 2405/4670-44
> Use Debian GNU/Linux!                  | Fax: (+49) 2405/4670-10
>
> > -----Original Message-----
> > From:    Zeugswetter Andreas SARZ [SMTP:Andreas.Zeugswetter@telecom.at]
> > Sent:    Wednesday, February 18, 1998 6:33 PM
> > To:    'pgsql-hackers@hub.org'
> > Subject:    Re: [HACKERS] Subselects and NOTs
> >
> > This is what I did:
> >     create table a (a int, a1 char(8));
> >     create table b (b int);
> >     insert into a values (1, 'one');
> >     insert into a values (NULL, 'null');
> >
> >
> > and this is what I got from Informix:
> > > select * from a where a not in (select * from b);
> >           a a1
> >           1 one
> >             null
> > 2 row(s) retrieved.
> > >  select * from a where not (a in (select * from b));
> >           a a1
> >           1 one
> >             null
> > 2 row(s) retrieved.
> > > select * from a where not a in (select * from b);
> >           a a1
> >           1 one
> >             null
> > 2 row(s) retrieved.
> > > select * from a where a<>(select * from b);
> >           a a1
> > No rows found.
> > > select * from a where a=(select * from b);
> >           a a1
> > No rows found.
> >
> > Andreas
>
>