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?
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?
2017-03-23
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