diff --git a/djangosphinx/models.py b/djangosphinx/models.py
index 5812ba1..fbfdd59 100644
--- a/djangosphinx/models.py
+++ b/djangosphinx/models.py
@@ -201,6 +201,7 @@ def __init__(self, model=None, using=None, **kwargs):
         self._excludes              = {}
         self._extra                 = {}
         self._query                 = ''
+        self._select                = ''
         self.__metadata             = None
         self._offset                = 0
         self._limit                 = 20
@@ -236,6 +237,14 @@ def __repr__(self):
         else:
             return '<%s instance>' % (self.__class__.__name__,)
 
+    def __getstate__(self):
+        dict = self.__dict__.copy()
+        if self._result_cache:
+            dict['_result_cache'] = None
+            dict['_metadata'] = {}
+            dict['_SphinxQuerySet__metadata'] = {}
+        return dict
+
     def __len__(self):
         return self.count()
         
@@ -326,6 +335,9 @@ def geoanchor(self, lat_attr, lng_attr, lat, lng):
         assert sphinxapi.VER_COMMAND_SEARCH >= 0x113, "You must upgrade sphinxapi to version 0.98 to use Geo Anchoring."
         return self._clone(_anchor=(lat_attr, lng_attr, float(lat), float(lng)))
 
+    def select(self, select_str):
+        return self._clone(_select=select_str)
+
     # this actually does nothing, its just a passthru to
     # keep things looking/working generally the same
     def all(self):
@@ -406,6 +418,10 @@ def _clone(self, **kwargs):
         c.__dict__.update(self.__dict__.copy())
         for k, v in kwargs.iteritems():
             setattr(c, k, v)
+        # reset cached data
+        c._result_cache = None
+        c.__metadata = {}
+        c._SphinxQuerySet__metadata = {}
         return c
     
     def _sphinx(self):
@@ -500,6 +516,9 @@ def _handle_filters(filter_list, exclude=False):
         if self._excludes:
             params.append('excludes=%s' % (self._excludes,))
             _handle_filters(self._excludes, True)
+
+        if self._select:
+            client.SetSelect(self._select)
         
         if self._groupby:
             params.append('groupby=%s' % (self._groupby,))