資料庫查詢發生錯誤

SELECT * FROM org_action WHERE status='1' and id= ORDER BY sequence DESC

MySQL 錯誤訊息: 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 'ORDER BY sequence DESC' at line 1執行資料庫指令時發生錯誤,程式中止執行