MySQL選擇內部聯接和聯合

我有這兩個表。我有當前玩家id_player，我想選擇這個玩家的所有遊戲（id_player）和他的對手信息。當前玩家和對手玩家使用相同的id_game進行連接。或MySQL選擇內部聯接和聯合

tables

table game:`id_game` (...) 
table game_player:`id_game_player, id_player, id_game`(...)

「給我從當前玩家所有獨立的遊戲資訊和他的對手並加入信息對他們的遊戲（通過遊戲分組）」

結果爲：

 +---player game info 
game1 | 
     +---opponent game info 

     +---player game info 
game2 | 
     +---opponent1 game info 

     +---player game info 
game2 | 
     +---opponent2 game info

Can anyon e提供給我MySQL解決方案嗎？

感謝

編輯：我嘗試用這個代碼，但我不知道這是最快的方法（其中），是有什麼辦法可以組結果像上面？

SELECT * FROM game_player 
    JOIN `game` ON game.id_game = game_player.id_game 
    WHERE game_player.id_game 
    IN (
    SELECT game_player.id_game 
    FROM `game_player` 
    WHERE game_player.id_player =2)

來源

2013-02-05 Jovan

哪裏是遊戲信息？ – veljasije

「遊戲信息」表示表格中的所有其他字段* – Jovan

問題措辭_「給我所有單獨的遊戲信息...」_使得這個分配問題的聲音強烈。你可以發佈你的努力到目前爲止？ –

試試這個

SET @player_ID = 0;     -- <<== the playerID 
SELECT a.*, b.*, 'player' Status   -- this is the first part of the union 
FROM game a       -- which gets all the game of 
     INNER JOIN game_player b   -- the selected player and its info 
      ON a.id_game = b.id_game 
WHERE id_player = @player_ID 
UNION ALL 
SELECT d.*, c.*, 'opponent' status 
FROM game_player c 
     INNER JOIN 
     (
      SELECT a.* 
      FROM game aa 
        INNER JOIN game_player bb 
         ON aa.id_game = bb.id_game 
      WHERE bb.id_player = @player_ID 
     ) d ON c.id_game = d.id_game AND c.id_player <> @player_ID 
ORDER BY id_game, status

來源

2013-02-05 14:50:56

MySQL選擇內部聯接和聯合

回答

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