FIX: Not returning the correct multilevel price

htdocs/product/class/product.class.php

@@ -12,6 +12,7 @@
  * Copyright (C) 2014		Henry Florian			<florian.henry@open-concept.pro>
  * Copyright (C) 2014		Philippe Grand			<philippe.grand@atoo-net.com>
  * Copyright (C) 2014		Ion agorria			<ion@agorria.com>
+ * Copyright (C) 2016		Ferran Marcet			<fmarcet@2byte.es>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -1673,7 +1674,7 @@ function fetch($id='', $ref='', $ref_ext='', $ignore_expression = 0)
 						$sql.= " WHERE entity IN (".getEntity('productprice', 1).")";
 						$sql.= " AND price_level=".$i;
 						$sql.= " AND fk_product = '".$this->id."'";
-						$sql.= " ORDER BY date_price, rowid DESC";
+						$sql.= " ORDER BY date_price DESC, rowid DESC";
 						$sql.= " LIMIT 1";
 						$resql = $this->db->query($sql);
 						if ($resql)