From 88302f5437cd84e5f8c94250ea1cf98b5cf844b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Wed, 21 Feb 2018 14:34:58 +0100
Subject: [PATCH] Ensure grouping has no duplicate fields

Otherwise it generates ambiguous SQL query.

issue7141
---
 move.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/move.py b/move.py
index 0a6be71c41..c2bcc69510 100644
--- a/move.py
+++ b/move.py
@@ -1021,6 +1021,7 @@ class Move(Workflow, ModelSQL, ModelView):
             if field not in Model._fields:
                 raise ValueError('"%s" has no field "%s"' % (Model, field))
         assert grouping_filter is None or len(grouping_filter) == len(grouping)
+        assert len(set(grouping)) == len(grouping)
 
         move_rule_query = Rule.query_get('stock.move')