Hello,

On Fri, Aug 21, 2015 at 2:48 PM, Genc, Ömer <oemer.g...@iais.fraunhofer.de>
wrote:

> Now I want to delete all entries from ims_point, where the timestamp is
> older than one hour. The currently being referenced ids of the table
> ims_object_header should be excluded from this deletion.
>
>
>

delete from public.ims_point ip
  where ip.timestamp < current_timestamp - interval '1 hour'
    and not exists ( select 'reference exists'
                       from public.ims_object_header ioh
                      where ioh.last_point_id = ip.point_id
                     )
;

Does this works for you ?

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