Categorize renderer template functions

client/renderer/templates/20_public_functions.erb

@@ -21,4 +21,4 @@ BEGIN
 
   <% return_statement do %><%= DATASERVICES_CLIENT_SCHEMA %>._<%= name %>(<%= params(_with_user_org=true).join(', ') %>)<% end %>
 END;
-$$ LANGUAGE 'plpgsql' SECURITY DEFINER;
+$$ LANGUAGE 'plpgsql' SECURITY DEFINER STABLE PARALLEL UNSAFE;

client/renderer/templates/25_exception_safe_private_functions.erb

@@ -32,4 +32,4 @@ BEGIN
         <%= return_statement %>
   END;
 END;
-$$ LANGUAGE 'plpgsql' SECURITY DEFINER;
+$$ LANGUAGE 'plpgsql' SECURITY DEFINER STABLE PARALLEL UNSAFE;

client/renderer/templates/30_plproxy_functions.erb

@@ -6,4 +6,4 @@ RETURNS <%= return_type %> AS $$
   <% else %>
   SELECT <%= DATASERVICES_SERVER_SCHEMA %>.<%= name %> (<%= params(_with_user_org=true).join(', ') %>);
   <% end %>
-$$ LANGUAGE plproxy;
+$$ LANGUAGE plproxy VOLATILE PARALLEL UNSAFE;