Ms-Access:联接3个表 | 联接3个表

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问题描述

没有人有一个如何联接3个表的示例，我有以下语句，但缺少一个(语法错误运算符错误")

Does anyone have a example of how to join 3 tables, I have the following statement but I'm getting a missing a (syntax error "operator error")

da = New OleDbDataAdapter("SELECT [S].[Scheduled Vege], [V].[Description], 
        [DS].[Task], [DS].[Task Date], [DS].[Completed] FROM [Scheduled] AS S 
        INNER JOIN [Date Schedules] AS DS ON [S].[SchedID] = [DS].[SchedID] 
        INNER JOIN [Vegetables Descriptions] AS V ON [V].[Task] = [DS].[Task] 
        WHERE [DS].[TaskNumber] >= " & aFromDate & " AND [DS].[TaskNumber] <= " & aToDate & " 
        AND [DS].[Completed] = '" & aCompleted & "' ", conn)

谢谢

推荐答案

发现了问题，因为它是一个访问数据库，因此fisrt from语句和INNER JOIN需要放在方括号中，如下所示.

Found the problem, because it's an access database the fisrt from statement and INNER JOIN needs to be in brackets as shown below.

da = New OleDbDataAdapter("SELECT [S].[Scheduled Vege], [V].[Description], 
[DS].[Task], [DS].[Task Date], [DS].[Completed] FROM ([Scheduled] AS S 
INNER JOIN [Date Schedules] AS DS ON [S].[SchedID] = [DS].[SchedID]) 
INNER JOIN [Vegetables Descriptions] AS V ON [V].[Task] = [DS].[Task] 
WHERE [DS].[TaskNumber] >= " & aFromDate & " AND [DS].[TaskNumber] <= " & aToDate & " 
AND [DS].[Completed] = '" & aCompleted & "' ", conn)

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