diff --git a/script/partitioning.pl b/script/partitioning.pl
index eb0b3b3..d0d7bb7 100755
--- a/script/partitioning.pl
+++ b/script/partitioning.pl
@@ -54,11 +54,11 @@ sub inizializza {
 
 	printf  "Inizio attivita' %s\n",strftime('%d-%m-%Y %H:%M:%S',localtime) if ($messaggi);
 
-	$part = "ALTER TABLE $tabella PARTITION BY RANGE DATE ( $campo ) (\n";
+	$part = "ALTER TABLE $tabella PARTITION BY RANGE ( unix_timestamp($campo) ) (\n";
 
 	$query = "	SELECT 
 				DATE_FORMAT($campo, \"%Y%m%d\") AS giorno, 
-				DATE_FORMAT($campo, \"%Y-%m-%d\") AS partenza
+				unix_timestamp($campo) AS partenza
 			FROM 
 				$tabella
 			GROUP BY