Hi Nyall, Thanks for clarifying.
This needs to be properly documented and taught in QGIS courses. Andreas On 2016-12-27 02:03, Nyall Dawson wrote: > On 23 December 2016 at 23:37, Paolo Cavallini <cavall...@faunalia.it> wrote: > Il 23/12/2016 14:32, Giovanni Manghi ha scritto: > > The solution from the Gitter discussion > > aggregate( 'layername','max',"id")+1 > thanks Giovanni > > We need of course a more user friendly way to allow users have > incremental/serial ids in their shapefiles... > sure, e.g. a named preset expression, as previously suggested. > all the best. In master you can add UNIQUE and NOT NULL constraints to the field from within QGIS. This will cause QGIS to automatically populate it with a serial type value whenever a new feature is created. Nyall > -- > Paolo Cavallini - www.faunalia.eu [1] > QGIS & PostGIS courses: http://www.faunalia.eu/training.html > https://www.google.com/trends/explore?date=all&geo=IT&q=qgis,arcgis > _______________________________________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer Links: ------ [1] http://www.faunalia.eu
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