MySQL server error report:Array ( [0] => Array ( [message] => MySQL Query Error ) [1] => Array ( [sql] => select goods_id,goods_name,shop_price,goods_thumb from `baogong`.`ecs_goods` where is_best=1 and is_on_sale = 1 AND is_alone_sale = 1 AND is_delete = 0 and cat_id in () order by sort_order,last_update ASC limit 3 ) [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 sort_order,last_update ASC limit 3' at line 1 ) [3] => Array ( [errno] => 1064 ) )