From b6697327280e9a2cca668014f911ea2ce8ac6c0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sat, 22 Jun 2013 00:23:19 +0200
Subject: [PATCH] Reduce IN_MAX by number of columns in UNIQUE validation

issue3230
review934002
---
 trytond/model/modelsql.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/trytond/model/modelsql.py b/trytond/model/modelsql.py
index 7db78650ef..874b3a1e02 100644
--- a/trytond/model/modelsql.py
+++ b/trytond/model/modelsql.py
@@ -2045,12 +2045,14 @@ class ModelSQL(ModelStorage):
             match = _RE_UNIQUE.match(sql)
             if match:
                 sql = match.group(1)
+                columns = sql.split(',')
                 sql_clause = ' AND '.join('%s = %%s'
-                    % i for i in sql.split(','))
+                    % i for i in columns)
                 sql_clause = '(id != %s AND ' + sql_clause + ')'
 
-                for i in range(0, len(ids), cursor.IN_MAX):
-                    sub_ids = ids[i:i + cursor.IN_MAX]
+                in_max = cursor.IN_MAX / (len(columns) + 1)
+                for i in range(0, len(ids), in_max):
+                    sub_ids = ids[i:i + in_max]
                     red_sql, red_ids = reduce_ids('id', sub_ids)
 
                     cursor.execute('SELECT id,' + sql + ' '