[Qgis-user] null attributes in wfs response not returned anymore

[Alessandro Pasotti]

Hi,

See:
https://github.com/qgis/QGIS/issues/45243


On Wed, Apr 22, 2026 at 11:40 AM Oliver Christen via QGIS-User
<qgis-user at lists.osgeo.org> wrote:
>
> Dear all
>
> I observed that at least until version 3.28 of Qgis server, wfs queries return all attributes enabled, even when attribute values are null,
> for example:
>
> <qgs:railways fid="railways.2372">
>   <gml:boundedBy>
>    <gml:Box srsName="EPSG:2056">
>     <gml:coordinates cs="," ts=" ">2496713.6,1120047 2496904.7,1120310</gml:coordinates>
>    </gml:Box>
>   </gml:boundedBy>
>   <qgs:geometry>
>    <LineString xmlns="http://www.opengis.net/gml" srsName="EPSG:2056">
>     <coordinates xmlns="http://www.opengis.net/gml" cs="," ts=" ">2496904.7,1120310 2496811.4,1120210.2 2496788.3,1120183.8 2496773.2,1120163.6 2496757.1,1120140 2496745.7,1120121.3 2496733.6,1120098.4 2496722.3,1120071.8 2496717.1,1120057.2 2496713.6,1120047</coordinates>
>    </LineString>
>   </qgs:geometry>
>   <qgs:fid>2372</qgs:fid>
>   <qgs:osm_id>27884774</qgs:osm_id>
>   <qgs:name xsi:nil="true"/>
>   <qgs:type>rail</qgs:type>
>   <qgs:geom_4326></qgs:geom_4326>
>  </qgs:railways>
>
> Here we can see that "name" is returned, but is null.
>
> But testing with version 3.34 and newer, null attribute are completely absent from the wfs response,
>
> I checked the visual changelog of Qgis between 3.28 and 3.24, but I couldn't find any information about this behavior change.
>
> Please can someone tell me what was changed in Qgis, and if this behavior can be configured somehow ?
>
> Thank you very much
> best regards
> Oliver
>
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Alessandro Pasotti
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