I have a shapefile in QGIS and I want to dissolve it with the options:
A field named 'specialid' has the same value
A field named 'city' has different value
Ok the first is very easy. It is basically what dissolve is meant to be So all same specialid will be unified. But I want those with the same 'specialid' and different 'city' value NOT to be dissolved. How can I process the second option? Is there a way to select it or do it another way?