MySQL server error report:Array ( [0] => Array ( [message] => MySQL Query Error ) [1] => Array ( [sql] => SELECT g.goods_id,g.goods_name,g.cat_id,g.shop_price , c.cat_id FROM `hdm144528274_db`.`ecs_goods` as g LEFT JOIN `hdm144528274_db`.`ecs_category` AS c ON g.cat_id = c.cat_id WHERE g.goods_id in () order by c.sort_order asc ) [2] => Array ( [error] => 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 c.sort_order asc' at line 1 ) [3] => Array ( [errno] => 1064 ) )