diff --git a/classes/RequestSql.php b/classes/RequestSql.php
index 1c5fed30a..43ac2a81f 100644
--- a/classes/RequestSql.php
+++ b/classes/RequestSql.php
@@ -247,7 +247,7 @@ class RequestSqlCore extends ObjectModel
 	 */
 	public function cutAttribute($attr, $from)
 	{
-		if (preg_match('#^((`(\()?([a-z_])+`(\))?)|((\()?([a-z_])+(\))?))\.((`(\()?([a-z_])+`(\))?)|((\()?([a-z_])+(\))?))$#i', $attr))
+		if (preg_match('#^((`(\()?([a-z0-9_])+`(\))?)|((\()?([a-z0-9_])+(\))?))\.((`(\()?([a-z0-9_])+`(\))?)|((\()?([a-z0-9_])+(\))?))$#i', $attr))
 		{
 			$tab = explode('.', str_replace(array('`', '(', ')'), '', $attr));
 			if (!$table = $this->returnNameTable($tab[0], $from))
@@ -258,7 +258,7 @@ class RequestSqlCore extends ObjectModel
 							'attribut' => $tab[1],
 							'string' => $attr);
 		}
-		else if (preg_match('#^((`(\()?([a-z_])+`(\))?)|((\()?([a-z_])+(\))?))$#i', $attr))
+		elseif (preg_match('#^((`(\()?([a-z0-9_])+`(\))?)|((\()?([a-z0-9_])+(\))?))$#i', $attr))
 		{
 			$attribut = str_replace(array('`', '(', ')'), '', $attr);
 			if (!$table = $this->returnNameTable(false, $from))