这个错误在哪里？ （访问查询）

Question

SELECT [02d1_NTS_Report_Structure].Nation, [02d1_NTS_Report_Structure].Region, 
    [02d1_NTS_Report_Structure].Territory, [02d1_NTS_Report_Structure].Zone,
    iif ([02d1_NTS_Report_Structure].Zone="-", 
        iff ([02d1_NTS_Report_Structure].Territory="-",
            iff ([02d1_NTS_Report_Structure].Region="-", 
                [02d1_NTS_Report_Structure].Nation, 
                [02d1_NTS_Report_Structure].Region),
        [02d1_NTS_Report_Structure].Territory), 
    [02d1_NTS_Report_Structure].Zone)
FROM 02d1_NTS_Report_Structure;

Answer 1

看起来你正在使用＆＃34; IFF＆＃34;而不是＆＃34; IIF＆＃34;在几个地方。

试试这个：

SELECT [02d1_NTS_Report_Structure].Nation, [02d1_NTS_Report_Structure].Region, 
    [02d1_NTS_Report_Structure].Territory, [02d1_NTS_Report_Structure].Zone,
    iif ([02d1_NTS_Report_Structure].Zone="-", 
        iif ([02d1_NTS_Report_Structure].Territory="-",
            iif ([02d1_NTS_Report_Structure].Region="-", 
                [02d1_NTS_Report_Structure].Nation, 
                [02d1_NTS_Report_Structure].Region),
        [02d1_NTS_Report_Structure].Territory), 
    [02d1_NTS_Report_Structure].Zone)
FROM 02d1_NTS_Report_Structure;

Answer 2

我唯一能看到的是你可能应该在表名周围加上括号：

SELECT [02d1_NTS_Report_Structure].Nation, 
[02d1_NTS_Report_Structure].Region, 
[02d1_NTS_Report_Structure].Territory, 
[02d1_NTS_Report_Structure].Zone, 
IIF([02d1_NTS_Report_Structure].Zone="-", 
    IIF([02d1_NTS_Report_Structure].Territory="-",
       IIF([02d1_NTS_Report_Structure].Region="-", 
           [02d1_NTS_Report_Structure].Nation,
           [02d1_NTS_Report_Structure].Region),
        [02d1_NTS_Report_Structure].Territory), 
     [02d1_NTS_Report_Structure].Zone) 
    FROM [02d1_NTS_Report_Structure];