查询出错：select id,category_name,category_title_note,parent_id,level_num,level_notes,display_order,image_url,category_note,category_details,seo_title,seo_keywords,seo_description from t_product_category where (id=) limit 0,1<br>错误信息：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 ') limit 0,1' at line 1