发生错误： select product.productid,product.productcategoryid,product.productname,product.productpicture,product.productcontent,product.productattachment from product left join productcategory on productcategory.productcategoryid=product.productcategoryid Array order by productcategory.productcategoryorderno Desc
技术提示是：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 'Array order by productcategory.productcategoryorderno Desc' at |
