錯誤1248（42000）：每個派生表都必須有自己的別名

Question

我如何保留錯誤1248（42000）：每個派生表都必須有自己的別名？我已經給每個表都有自己的別名，不是嗎？抱歉，我不太確定我在這裏做錯了什麼，因爲我在MySQL的第一個學期。

SELECT p.PlayerAlias as "Player", 
     s.HiScore as "Score" 
    FROM Player as p INNER JOIN Score as s ON p.PlayerID = s.PlayerID 
     LEFT OUTER JOIN (
      SELECT g.GameID 
      FROM Game as g 
      WHERE g.GameName = "Reaper" 
     ) ON s.GameID = g.GameID 
WHERE s.HiScore < 7000 AND s.HiScore > 4000; 

Answer 1

你缺少對左外後右內部查詢別名JOIN

SELECT p.PlayerAlias as "Player", 
     s.HiScore as "Score" 
    FROM Player as p INNER JOIN Score as s ON p.PlayerID = s.PlayerID 
     LEFT OUTER JOIN (
      SELECT g.GameID 
      FROM Game as g 
      WHERE g.GameName = "Reaper" 
     ) as g ON s.GameID = g.GameID 
WHERE s.HiScore < 7000 AND s.HiScore > 4000; 

Answer 2

您的子查詢下面應該有一個別名。

LEFT OUTER JOIN (
      SELECT g.GameID 
      FROM Game as g 
      WHERE g.GameName = "Reaper" 
     ) AS T