Il 29/06/2017 10:41, Anita Graser ha scritto: > ​Sounds OK to me if it is possible to select multiple grouping fields. +1 thanks -- Paolo Cavallini - www.faunalia.eu QGIS & PostGIS courses: http://www.faunalia.eu/training.html https://www.google.com/trends/explore?date=all&geo=IT&q=qgis,arcgis