Column 'sort_order' in order clause is ambiguous
SELECT `product`.productID, `name_ru` AS name, Price, in_stock, slug, `category`.categoryID as categoryID, product_code from SC_products as `product` LEFT JOIN SC_category_product as `category` ON (`product`.productID=`category`.productID) WHERE `category`.categoryID>1 and Price>0 and enabled=1 order by sort_order