fix datajoint#463

Author: dimitri-yatsenko

datajoint/relational_operand.py

@@ -574,7 +574,7 @@ def make_argument_subquery(arg):
         """
         Decide when a Join argument needs to be wrapped in a subquery
         """
-        return Subquery.create(arg) if isinstance(arg, (GroupBy, Projection)) else arg
+        return Subquery.create(arg) if isinstance(arg, (GroupBy, Projection)) or arg.restriction else arg
 
     @property
     def from_clause(self):