select g.goods_name from goodslist g,trading_information t where t.trading_goods_id=g.goods

源自：3-4 service类的实现

select g.goods_name from goodslist g,trading_information t where t.trading_goods_id=g.goods_di

9分32秒，select g.goods_name from goodslist g,trading_information t where t.trading_goods_id=g.goods_di 中“,trading_information t”这段代码是不是只是起到了别名的作用？

提问者：昵称是JaVa 2017-03-23 08:49