Question

我知道在这里处理不受支持的连接表达式有很多问题，我找不到一个引用我的情况。

我的查询如下：

SELECT T1.*, T2.Year, T3.Force, T4.Group AS myGroup
FROM ((AllQuestions AS T1 
INNER JOIN Years AS T2 ON T1.ID_Year = T2.ID) 
INNER JOIN Forces AS T3 ON T1.Questions_Force = T3.ID)
INNER JOIN Groups AS T4 ON  T4.ID = " & (Me.Texte423) & "
ORDER BY Categories, T1.Questions;

正如您在线上可以看到引用T4的那样，我正在尝试匹配表组中的ID以匹配报表中文本框中的值（这可能很重要）。

我得到的错误看起来像：不支持JOIN表达式。 “看起来”，因为我使用的是法语版的Access，所以这是一个基本的翻译...

我做错了什么？

Answer 1

我认为你需要CROSS JOIN表Groups，然后将T4.ID放在查询的WHERE子句中，但这并不能解决可能存在的关系在T4.ID和用于加入其他表的其他ID列之间：

SELECT T1.*, T2.Year, T3.Force, T4.Group AS myGroup
FROM ((AllQuestions AS T1 
INNER JOIN Years AS T2 ON T1.ID_Year = T2.ID) 
INNER JOIN Forces AS T3 ON T1.Questions_Force = T3.ID)
CROSS JOIN Groups AS T4 
WHERE T4.ID = " & (Me.Texte423) & "
ORDER BY Categories, T1.Questions;

如果ID和AllQuestions之间存在关联，那么您需要按以下方式修改查询：

SELECT T1.*, T2.Year, T3.Force, T4.Group AS myGroup
FROM ((AllQuestions AS T1 
INNER JOIN Years AS T2 ON T1.ID_Year = T2.ID) 
INNER JOIN Forces AS T3 ON T1.Questions_Force = T3.ID)
INNER JOIN Groups AS T4 ON T1.{Group ID Relation} = T4.ID
WHERE T4.ID = " & (Me.Texte423) & "
ORDER BY Categories, T1.Questions;

Answer 2

你做不到。但是您可以修改查询的SQL。将其设置为：

SELECT T1.*, T2.Year, T3.Force, T4.Group AS myGroup
FROM ((AllQuestions AS T1 
INNER JOIN Years AS T2 ON T1.ID_Year = T2.ID) 
INNER JOIN Forces AS T3 ON T1.Questions_Force = T3.ID)
INNER JOIN Groups AS T4 ON  T4.ID = {0}
ORDER BY Categories, T1.Questions;

然后在需要时设置/修改SQL：

MyQdy.SQL = Replace(SQL, "{0}", Me!Texte423.Value)

不支持访问SQL JOIN表达式

2 个答案: