SQL - 如何将2个查询合并在一起以获得我想要的结果

Question

我有2张桌子＆＃39; Climber＆＃39; ＆安培; ＆＃39; YearResults＆＃39;

我希望的结果是显示总和（moneyWon），按国籍排序＆＃39;。

我已完成查询以加入两个表格＆amp;总结钱但是我应该如何加入这两个查询，它将显示每个国家赢得的总金额。

select sum(moneyWon) from yearResults

(SELECT C.NATIONALITY, Y.MONEYWON, Y.YEAR
FROM CLIMBER c JOIN YEARRESULTS y
ON C.CLIMBERID = Y.CLIMBERID)

Answer 1

您需要加入表格并按国籍分组才能获得所需的结果：

SELECT 
    Climber.Nationality, 
    SUM(yearResults.MoneyWon) as MoneyWon
FROM Climber 
    INNER JOIN yearResult ON Climber.ClimberID = yearResults.ClimberID
GROUP BY Climber.Nationality
ORDER BY Climber.Nationality