| From: | Richard Broersma Jr <rabroersma(at)yahoo(dot)com> |
|---|---|
| To: | SQL Postgresql List <pgsql-sql(at)postgresql(dot)org> |
| Subject: | Re: How to find entries missing in 2nd table? |
| Date: | 2006-07-11 17:03:39 |
| Message-ID: | 20060711170339.65498.qmail@web31809.mail.mud.yahoo.com |
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| Lists: | pgsql-sql |
--- Richard Broersma Jr <rabroersma(at)yahoo(dot)com> wrote:
> > >> I need to get all entries from the table control that are not listed in
> > >> datapack.
> > >
> > > SELECT C.CONTROLLER_ID
> > >
> > > FROM CONTROL AS C
> > > LEFT JOIN DATAPACK AS D ON ( C.CONTROLLER_ID = D.CONTROLLER_ID)
> > >
> > > WHERE D.CONTROLLER_ID IS NULL;
> > >
> >
> >
> > Or
> > (SELECT controller_id FROM control)
> > EXCEPT
>
> Good point! But don't forget to include the list. :-)
>
> Regards,
>
> Richard Broersma Jr.
> > (SELECT controller_id FROM datapack)
> > ?
> >
> > --
> > Milen A. Radev
> >
>
>
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