Try EXCEPT (only in v6.5).
-DEJ
> -----Original Message-----
> From: Nikolay Mijaylov [SMTP:nmmm@nsi.bg]
> Sent: Tuesday, July 13, 1999 6:41 AM
> To: pgsql-general@postgreSQL.org
> Subject: Re: [GENERAL] Set operator.
>
> I know it is not the same but try this:
>
>
> select table1.value1 from table1 where table1.value1 not in (select
> table2.value2 from table2)
>
>
> well im never try this to this moment..... :)
> but u can
>
> nmmm.hypermart.net
> w3.nsi.bg/linux
> www.nsi.bg/nmmm
>
>
>
> ----- Original Message -----
> From: Stuart Rison <stuart@ludwig.ucl.ac.uk>
> To: <pgsql-general@postgreSQL.org>
> Sent: 13 Þëè 1999 ã. 13:18
> Subject: [GENERAL] Set operator.
>
>
> > Dear all,
> >
> > What set operators other then UNION do PG have?
> >
> > In particular, I am interested in the MINUS or equivalent operator. e.g
> >
> > table1:
> >
> > value1
> > 1
> > 2
> > 3
> > 4
> > 5
> > 6
> > 7
> > 8
> > 9
> >
> > table2:
> >
> > value2
> > 1
> > 3
> > 5
> > 7
> > 9
> >
> > SELECT table1.value1 FROM table1 MINUS table2.value2 FROM table2;
> >
> > result:
> > 2
> > 4
> > 6
> > 8
> >
> > I have PG 6.4.0 so please specify what version of PG might have this
> > functionality... also, can anybody offer hints as to how to implement
> such
> > functionality if necessary?
> >
> > Regards,
> >
> > Stuart.
> >
> > +-------------------------+--------------------------------------+
> > | Stuart Rison | Ludwig Institute for Cancer Research |
> > +-------------------------+ 91 Riding House Street |
> > | Tel. (0171) 878 4041 | London, W1P 8BT, UNITED KINGDOM. |
> > | Fax. (0171) 878 4040 | stuart@ludwig.ucl.ac.uk |
> > +-------------------------+--------------------------------------+
>
