A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND sleeps >= '1' AND status = 'sn' ORDER BY `sleeps`, RAND()' at line 4

SELECT `id` FROM (`property`) WHERE `sleeps` <= AND sleeps >= '1' AND status = 'sn' ORDER BY `sleeps`, RAND()