Sql MS-ACCESS 3表联接

使用join语句从3个表中获取数据时遇到问题。 我将感谢任何帮助

谢谢

我有三张桌子：

Table "Users"
=============
UserID      FirstName   LastName
-----------------------------------------
1       Mick        Mickley
2       Tomy        Hanks
3       Roger       Waters


Table "Appeals"
===============
AppealID    Title       CategoryID  SubmittedByUserID
-----------------------------------------------------------------
1       Title1          2           1
2       Title2          2           1
3       Title3          3           2


And Table "AppealsCategories"
=============================
CatID       CatName     CatDescription
-----------------------------------------
1       CategoryA   CatDescription1
2       CategoryB   CatDescription2
3       CategoryC   CatDescription3

我希望能够从表“上诉”中获得所有上诉，该表的CategoryID与类别名称“CategoryA”（表“AppelsCategories”）相关。对于每个申诉，获取表“申诉”中与SubmittedByUserID相关的所有字段以及（来自表“用户”）的名字和姓氏

我写了这个SQL语句，但它不起作用：

SELECT Appeals.*, Users.Firstname, Users.LastName
FROM Users
JOIN Appeals ON Appeals.SubmittedByUserID=Users.UserID
JOIN AppealsCategories ON Appeals.CategoryID=AppealsCategories.CatID
WHERE AppealCategories.CatName='CategoryA';

我做错了什么，有什么帮助吗。。？？我正在使用MS ACCESS

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请帮忙！！！谢谢

正如Paul也指出的，您的查询中有一个输入错误。另外，括号，可爱的括号，您需要将连接包装成：

SELECT Appeals.*, Users.Firstname, Users.LastName
FROM ((Users
        JOIN Appeals ON Appeals.SubmittedByUserID=Users.UserID)
        JOIN AppealsCategories ON Appeals.CategoryID=AppealsCategories.CatID)
WHERE AppealsCategories.CatName='CategoryA';

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MS Access具有非常特定的联接语法，包括特定的关键字和括号。试试这个：

SELECT Appeals.*, Users.Firstname, Users.LastName
FROM (Users INNER JOIN
      Appeals
      ON Appeals.SubmittedByUserID = Users.UserID
     ) INNER JOIN
     AppealsCategories
     ON Appeals.CategoryID = AppealsCategories.CatID
WHERE AppealsCategories.CatName = "CategoryA";

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此外，字符串分隔符是双引号，而不是单引号。

此语法起作用。这是有用的。谢谢