diff --git a/oml/queryparser.py b/oml/queryparser.py
index 27acd42..5ccc68a 100644
--- a/oml/queryparser.py
+++ b/oml/queryparser.py
@@ -107,33 +107,16 @@ class Parser(object):
             vk = getattr(self._sort, k)
             q = operators.eq(vk, v)
             ids = self._model.query.join(self._sort).filter(q).options(load_only('id'))
-            if not ids:
-                q = operators.eq(self._model.id, '')
-                if exclude:
-                    q = ~q
-            else:
-                in_op = operators.notin_op if exclude else operators.in_op
-                q = in_op(self._model.id, ids)
-            return q
+            return self.in_ids(ids, exclude)
         elif k == 'id':
             if op == '&':
                 ids = v
             else:
                 ids = [v]
-            in_op = operators.notin_op if exclude else operators.in_op
-            q = in_op(self._model.id, ids)
-            return q
+            return self.in_ids(ids, exclude)
         elif k == 'fulltext':
             ids = find_fulltext(v)
-            if ids:
-                in_op = operators.notin_op if exclude else operators.in_op
-                q = in_op(self._model.id, ids)
-            else:
-                # nothing
-                q = operators.eq(self._model.id, -1)
-                if exclude:
-                    q = ~q
-            return q
+            return self.in_ids(ids, exclude)
 
         elif key_type in ("string", "text"):
             if isinstance(v, str):
@@ -142,9 +125,7 @@ class Parser(object):
             if k != '*':
                 q &= (self._find.key == k)
             ids = self._model.query.join(self._find).filter(q).options(load_only('id'))
-            in_op = operators.notin_op if exclude else operators.in_op
-            q = in_op(self._model.id, ids)
-            return q
+            return self.in_ids(ids, exclude)
         elif k == 'list':
             nickname, name = v.split(':', 1)
             if nickname:
@@ -175,9 +156,7 @@ class Parser(object):
                     )
                 else:
                     ids = l.get_items().options(load_only('id'))
-            in_op = operators.notin_op if exclude else operators.in_op
-            q = in_op(self._model.id, ids)
-            return q
+            return self.in_ids(ids, exclude)
         elif key_type == 'date':
             def parse_date(d):
                 while len(d) < 3:
@@ -188,15 +167,21 @@ class Parser(object):
             vk = getattr(self._sort, k)
             q = get_operator(op, 'int')(vk, v)
             ids = self._model.query.join(self._find).filter(q).options(load_only('id'))
-            in_op = operators.notin_op if exclude else operators.in_op
-            q = in_op(self._model.id, ids)
-            return q
+            return self.in_ids(ids, exclude)
         else: #integer, float, time
             q = get_operator(op, 'int')(getattr(self._sort, k), v)
             ids = self._model.query.join(self._find).filter(q).options(load_only('id'))
+            return self.in_ids(ids, exclude)
+
+    def in_ids(self, ids, exclude):
+        if isinstance(ids, list) and not ids:
+            q = operators.eq(self._model.id, '')
+            if exclude:
+                q = ~q
+        else:
             in_op = operators.notin_op if exclude else operators.in_op
             q = in_op(self._model.id, ids)
-            return q
+        return q
 
     def parse_conditions(self, conditions, operator):
         '''