摘要：
自身连接无限分类数据表设计:CREATE TABLE tdb_goods_types ( type_id SMALLINT UNSIGNED PRIMARY KEY AUTO_INCREMENT, type_name VARCHAR(20) N... 阅读全文
摘要：
多表连接三表连接demo： SELECT goods_id,goods_name,cate_name,brand_name,goods_price FROM tdb_goods AS g INNER JOIN tdb_goods_cates AS c ON... 阅读全文