postgresql - Unable to show geometry in virtual layer qgis

I'm trying to create a virtual layer starting from a municipality layer and from a table of attributes, both stored in a Postgresql DB.

So I've done a join like:

*SELECT munic, country_of_origin, SUM (presence), munic.NOME
FROM ps JOIN munic ON munic.pro_com = ps.pro_com
WHERE country_of_origin = 'Germany'
GROUP BY munic.NOME
ORDER BY munic.NOME DESC*

I've set the geometry fields in the mask, I see the join in the attribute table, but I can't see the map

Any ideas?