Question

我有两张桌子：

小组

Id  Name
1   Manchester
2   Arsenal
3   Inter
4   Milan

游戏

GameId  FirstTeamId GoalsFirstTeam  GoalsSecondTeam SecondTeamId
1            1            0                 0             2
2            3            2                 3             4
3            1            1                 1             3

我希望使用select GameResult更新为Games并加入两个表Teams和GameId FirstTeam GoalsFT GoalsST SecondTeam 1 Manchester 0 0 Arsenal 2 Inter 2 3 Milan 3 Manchester 1 1 Inter，如下所示：

UPDATE GameResult
SET    GameId = (SELECT GameId
                 FROM   Games),
       FirstTeam = (SELECT t1.Name AS FirstTeam
                    FROM   Games AS g
                           INNER JOIN Teams t1
                                   ON g.FirstTeamId = t1.Id),
       GoalsFT = (SELECT GoalsFirstTeam
                  FROM   Games),
       GoalsST = (SELECT GoalsSecondTeam
                  FROM   Games),
       SecondTeam = (SELECT t2.Name AS SecondTeam
                     FROM   Games AS g
                            INNER JOIN Teams t2
                                    ON g.SecondTeamId = t2.Id)

我试过了：

{{1}}

......但它没有用。

有人可以帮我这个吗？

Answer 1

试试这个

UPDATE GameResult
SET GameId = G.GameId,
       FirstTeam = T1.Name,
       GoalsFT = G.GoalsFirstTeam,
       GoalsST = G.GoalsSecondTeam,
       SecondTeam = T2.Name 
 FROM Games G INNER JOIN Teams T1 ON G.FirstTeamID=T1.ID
        INNER JOIN Teams T2 ON G.SecondTeamId=T2.ID

<强>更新

如果您只想从其他2个表中将新记录插入到GameResult中，请尝试使用

INSERT GameResult (GameId, FirstTeam, GoalsFT, GoalsST, SecondTeam)
SELECT G.GameId, T1.Name, G.GoalsFirstTeam, G.GoalsSecondTeam, T2.Name 
 FROM Games G INNER JOIN Teams T1 ON G.FirstTeamID=T1.ID
        INNER JOIN Teams T2 ON G.SecondTeamId=T2.ID

Answer 2

您的桌子'GameResult'似乎没有任何记录需要更新。首先填写它，然后使用Pupa Rebbe的上述解决方案，或使用Merge语句插入，更新和（如果需要）删除记录。

有关详细信息，请参阅this MS library

Answer 3

简单的解决方案：

从GameResult删除走插入GameResult（GameId， FirstTeam，GoalsFT，GoalsST，SecondTeam） SELECT g.GameId， t1.Name AS FirstTeam， g.GoalsFirstTeam，g.GoalsSecondTeam， t2.Name AS SecondTeam 来自游戏g INNER JOIN Team t1 ON g.FirstTeamId = t1.Id INNER JOIN Team t2 ON g.SecondTeamId = t2.Id

SQL Server：使用Select和Join两个表从一个表更新

3 个答案: