python-3.x - sqlite 将来自不同表的 2 个查询合并为一个

Question

我最近又开始使用sql，上次使用它是在microsoft access 2000中，所以如果我有点落后于时代，请多多包涵。

我的 Discord 服务器上有 2 个毫无意义的虚拟货币，供我的玩家玩毫无意义的游戏。这两种货币的交易当前都存储在单独的表中。

我希望汇总每个玩家的所有交易，以便为他们提供每种货币的单一当前金额。我个人可以这样做:

SELECT
 tblPlayers.PlayerID AS PlayerID,
 tblPlayers.Name AS Name,
 SUM(tblGorillaTears.Amount) 
FROM 
 tblPlayers 
INNER JOIN 
 tblGorillaTears
ON 
 tblPlayers.PlayerID = tblGorillaTears.PlayerID 
GROUP BY 
 tblPlayers.PlayerID;

和

SELECT
 tblPlayers.PlayerID AS PlayerID,
 tblPlayers.Name AS Name,
 SUM(tblKebabs.Amount) 
FROM 
 tblPlayers 
INNER JOIN 
 tblKebabs 
ON 
 tblPlayers.PlayerID = tblKebabs.PlayerID 
GROUP BY 
 tblPlayers.PlayerID;

我需要一个表格，在一行上输出用户名、ID 和每种货币的总计，但是当我这样做时:

SELECT
 tblPlayers.PlayerID AS PlayerID,
 tblPlayers.Name AS Name,
 SUM(tblGorillaTears.Amount) AS GT,
 0 as Kebabs
FROM 
 tblPlayers 
INNER JOIN 
 tblGorillaTears
ON 
 tblPlayers.PlayerID = tblGorillaTears.PlayerID 
GROUP BY 
 tblPlayers.PlayerID
UNION 
SELECT
 tblPlayers.PlayerID AS PlayerID,
 tblPlayers.Name AS Name,
 0 as GP,
 SUM(tblKebabs.Amount) 
FROM 
 tblPlayers 
INNER JOIN 
 tblKebabs 
ON 
 tblPlayers.PlayerID = tblKebabs.PlayerID 
GROUP BY 
 tblPlayers.PlayerID;

每个玩家的每种货币的结果以一行结束。我怎样才能使两种货币出现在同一行？

以前在 MSAccess 中，我能够创建两个查询，然后对这两个查询进行查询，就好像它们是一个表一样，但我不知道在这种情况下如何执行此操作。谢谢<3

Answer 1

UNION 肯定会添加新行，您可以尝试像下面的查询一样。

SELECT TP.playerid                        AS PlayerID, 
       TP.NAME                            AS NAME, 
       (SELECT Sum(TG.amount) 
        FROM   tblgorillatears TG 
        WHERE  TG.playerid = TP.playerid) AS GT, 
       (SELECT Sum(TG.amount) 
        FROM   tblkebabs TG 
        WHERE  TG.playerid = TP.playerid) AS Kebabs 
FROM   tblplayers TP