I have a vector layer with the definition of the blocks of the state of NY, and I have another vector layer with the definition of the group blocks of the state of NY. They are two different vector layer (shapefiles).
I also have a CSV table with some extra information (population) with the field GISJOIN, and I can join this csv file with one vector layer, the block vector layer (that have the same field GISJOIN).
How can I do the join with the other group block vector layer?
My goal is to have a csv file compatible with the group block vector layer.