二つの異なるデータのMySQLで

Question

私のテーブル次のとおりです。

がどのように表示されますSELECTを作成するには：買い手の名前と姓、販売者の姓とbuyedものと名前についての彼のコメント？

は、これまでのところ、私はそれの半分だけをしました：

SELECT User.name, User.surname, Realization.comment 
FROM User, Realization, Auction, Offer 
WHERE Realization.id_vote = Auction.id_voice AND Auction.id_buyer = User.id_user AND Offer.id_offer=Auction.id_offer; 

Answer 1

あなたが内部で試すことができ

select a.name as buyer_name, a.surname as buyer_surname, c.comment 
    e.name as seller_name, e.surname as seller_surname 
from User as a 
Inner Join Auction as b on b.id_buyer = a.id_user 
inner join Realization as c on c.id_voice = b.id_voice 
inner join Offer as d on d.id_offer = b.id_offer 
inner join User as e on d.id_seller = e.id_user;