[3.0] MINUS does not work
This query triggers an internal error: SELECT ?u ?p ?v { ?u ?p ?v MINUS { ?u a tracker:Namespace } }
$ tracker sparql --dbus-service=org.freedesktop.Tracker1.Miner.Files -q 'SELECT ?u ?p ?v { ?u ?p ?v MINUS { ?u a tracker:Namespace } }'
Could not run query, GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._tracker_2ddb_2dinterface_2derror_2dquark.Code0: SELECTs to the left and right of EXCEPT do not have the same number of result columns