How can I dissolve a polygon layer in QGIS based on a single attribute but keep all (or some) other attributes at the same time? This is how I want to retain fields:
There are at least two fields I want to retain the information from in the dissolved shapefile, one is a string, the other one is numerical.
I would like to dissolve the shapefile based on the field "Class", and I want to retain the information of columns "Object_ID" and "Signal_species"
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