Подскажите с LEFT JOIN

+----+-----------+
| id | name      |
+----+-----------+
|  1 | Книга     |
|  2 | Табуретка |
|  3 | Карандаш  |
+----+-----------+

+------+-----------+
|  sid  | name      |
+-------+-----------+
|  646  | Книга     |
|  325  | Табуретка |
|  666  | Карандаш  |
+-------+-----------+

SELECT n.id FROM name n LEFT JOIN who w ON w.name = n.name WHERE w.sid != 325

SELECT n.name FROM name n LEFT JOIN who w ON w.name = n.name
WHERE w.name NOT IN (SELECT name FROM who WHERE sid = 325)

$query = "SELECT n.name FROM name n LEFT JOIN who w ON w.name = n.name
WHERE w.name NOT IN (SELECT name FROM who WHERE sid = 325)";
$result = mysql_query($query);
$ref = mysql_num_rows($result);

$query = "SELECT * FROM name WHERE id = 1)";
$result = mysql_query($query);
$ref = mysql_num_rows($result);

SELECT n.name FROM name n LEFT JOIN who w ON w.name = n.name WHERE w.sid != 325 AND n.id = 1

SELECT name FROM name WHERE id = 1 AND name NOT IN (SELECT name FROM who WHERE sid = 325)