Ticket #1685: query.py.patch

C:/Dev/django_src_mr/django/db/models/query.py

@@ -427 +427 @@
                 else:
                     # Use the database table as a column prefix if it wasn't given,
                     # and if the requested column isn't a custom SELECT.
-                    if "." not in col_name and col_name not in [k[0] for k in (self._select or ())]:
+                    if "." not in col_name and col_name not in [k for k in (self._select or ())]:
                         table_prefix = backend.quote_name(opts.db_table) + '.'
                     else:
                         table_prefix = ''