From 745d8d0004af56873bf18ed36a68794f738ee985 Mon Sep 17 00:00:00 2001
From: Shtarev <anton.shtarev@msk.action.ru>
Date: Wed, 3 Jun 2015 09:04:28 +0300
Subject: [PATCH] added comment

---
 rest_framework/filters.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rest_framework/filters.py b/rest_framework/filters.py
index 39de22fa2..ff0b8e653 100644
--- a/rest_framework/filters.py
+++ b/rest_framework/filters.py
@@ -108,6 +108,7 @@ class SearchFilter(BaseFilterBackend):
             and_queries.append(reduce(operator.or_, or_queries))
 
         if and_queries:
+            # According to Oracle DB limits there is no capability to make a DISTINT on *LOB
             if settings.DATABASES[queryset.db]["ENGINE"] == "django.db.backends.oracle":
                 pk_list = queryset.filter(reduce(operator.and_, and_queries)).values_list('pk', flat=True)
                 return queryset.filter(pk__in=frozenset(pk_list))