AW: Re: [Qgis-developer] PostGIS Query Builder doesn't allow Queries with 0 result records

Düster Horst Horst.Duester at
Wed Sep 3 06:54:34 EDT 2008

Hi Jürgen

Thank you very much. Now it works and I can't see any problems at the



Dr. Horst Düster
GIS-Koordinator, Stv. Amtschef

Kanton Solothurn
Bau- und Justizdepartement
Amt für Geoinformation
SO!GIS Koordination
Rötistrasse 4
CH-4501 Solothurn

Telefon ++41(0)32 627 25 32
Telefax ++41(0)32 627 22 14

mailto:horst.duester at

-----Ursprüngliche Nachricht-----
Von: Jürgen E. Fischer [mailto:jef at]
Gesendet am: Mittwoch, 3. September 2008 12:35
An: qgis-developer at
Betreff: Re: [Qgis-developer] PostGIS Query Builder doesn't allow
Queries with 0 result records

Hi Horst,

On Wed, 03. Sep 2008 at 10:39:49 +0200, Düster Horst wrote:
> I do have the following scenario:
> Within a data capturing project I want to reduce the number of visible
> objects for a single digitizing person. This person only should see
> objects digitized by himself in a defined area. At the beginning of
> digitizing work, of course, no objects are belonging to this person.
> the result I'm not able to define an according query due to the
> limitation "QGIS needs in minimum 1 Object to work". 

> Is this limitation mandatory? 

I think there is no such limitation as you can add empty table just
fine.  The message only appears if you try to filter, therefore I
removed it in r9253.  Please let me know if this causes any problems.


Jürgen E. Fischer         norBIT GmbH               Tel.
Dipl.-Inf. (FH)           Rheinstraße 13            Fax.
Software Engineer         D-26506 Norden

norBIT Gesellschaft fuer Unternehmensberatung und Informationssysteme
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