mysql子查詢

mysql子查詢 where型子查詢 把內層查詢結果看成外層查詢的比較條件mysql -- 不用order by 來查詢最新的商品 -- 取出每一個欄目下最新的產品(goods_id惟一) select cat_id, goods_id,goods_name from goods where goods_id in(select max(goods_id) from goods group b

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