一個查詢中包含多個Select語句-PHP + MySQL

Question

桌子：球員：ID（PK），名字，隊，位置

對戰：matchupID（PK），player1ID，player2ID
player1ID和2是Players.ID的FK。

我想在拉動時選擇兩個玩家的名字，但無法正確查詢。 我不想在這里建立工會。

與此類似，對於格式化兩個表，我也提出了更好的建議。

$queryString = "SELECT Players.name FROM Players
                    INNER JOIN Matchup WHERE Players.ID = player1ID,
                    SELECT Players.name FROM Players
                    INNER JOIN Matchup WHERE Players.ID = player2ID";

Answer 1

你應該參加兩次球員而不是對決

  $queryString = "select a.name, b.name from Matchup as c
            Inner Join Players as a on c.player1ID = a.ID
            Inner Join Players as b on c.player2ID  = b.ID";