Fixed a bug in date queries with GIS backends introduced in [14715].

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14760 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/gis/db/models/sql/compiler.py

@@ -56,7 +56,7 @@ class GeoSQLCompiler(compiler.SQLCompiler):
                         col_aliases.add(col[1])
                 else:
                     result.append(col.as_sql(qn, self.connection))
-                    
+
                     if hasattr(col, 'alias'):
                         aliases.add(col.alias)
                         col_aliases.add(col.alias)

django/db/models/sql/subqueries.py

@@ -202,7 +202,7 @@ class DateQuery(Query):
         alias = result[3][-1]
         select = Date((alias, field.column), lookup_type)
         self.select = [select]
-        self.select_fields = []
+        self.select_fields = [None]
         self.select_related = False # See #7097.
         self.set_extra_mask([])
         self.distinct = True