一个具有多个文件名的字段映射：MsAccess SQL

Question

我无法将团队表与比赛表结合起来，这样我就可以每年获得团队绩效的统计数据。

数据库架构

需要输出

Answer 1

删除您创建的表关系。它没有用。您需要的是这样的东西：

SELECT Teams.[TeamNameField], Year([Date]) AS MatchYear, [HomeYellowCardField] AS YellowCards FROM Matches INNER JOIN Teams ON Matches.HomeTeam=Teams.[TeamIDField]
UNION ALL
SELECT Teams.[TeamNameField], Year([Date]) AS MatchYear, [AwayYellowCardField] AS YellowCards FROM Matches INNER JOIN Teams ON Matches.AwayTeam=Teams.[TeamIDField]

将其保存为永久查询。以此为起点，达到最终目标应该容易得多。