__query method of SQL class: 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 leave_date > 2012-02-01' at line 3 <br /> $sql=SELECT request_id,take_date,leave_date,aproved,leave_date-take_date AS period 
	FROM requests 
	WHERE object_id= AND leave_date > 2012-02-01