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 `zid` IS NULL ORDER BY `pxid` DESC, `id` DESC LIMIT 1' at line 4

SELECT * FROM `hj_show` WHERE `pxid` < AND `zid` IS NULL ORDER BY `pxid` DESC, `id` DESC LIMIT 1

Filename: models/Showmodel.php

Line Number: 228