SQL连接不正确

Question

我正在尝试从下图所示的数据库中选择值，以便可以插入到名为Desired Table的新Desired Table 。 数据和调试在Microsoft Access数据库中，并且我继续收到错误：

查询表达式中的语法错误。

此查询有什么问题？ 联接似乎正确，而FROM子句也是如此。 如果您需要更多信息，请告诉我。 不用担心INSERT子句。

查询：

SELECT vicdescriptions.vid, 
       vicdescriptions.make, 
       vicdescriptions.vic_year, 
       vicdescriptions.optiontable, 
       vacdescriptions.accessory, 
       vacvalues.value, 
       vicvalues.valuetype, 
       vicvalues.value 
FROM   vicdescriptions 
       JOIN vicvalues 
         ON ( vicdescriptions.vic_make = vicvalues.vic_make 
              AND vicdescriptions.vic_year = vicvalues.vic_year ); 

数据库结构：

数据库架构

所需的插入表：

Answer 1

Access不支持将JOIN作为INNER JOIN的同义词。 您必须始终指定JOIN的类型：

FROM   vicdescriptions 
       INNER JOIN vicvalues 
         ON ( vicdescriptions.vic_make = vicvalues.vic_make 
              AND vicdescriptions.vic_year = vicvalues.vic_year ) 

如果没有名为vicvalues的表，则在将JOIN更改为INNER JOIN之后，Access将给您不同的错误消息。

Answer 2

我猜只有在Ms-Access连接两个以上的表时才应该使用括号，并且它应该在第一个表名之前开始。 尝试将其删除。

.....
FROM   vicdescriptions 
       JOIN vicvalues 
         ON vicdescriptions.vic_make = vicvalues.vic_make 
             AND vicdescriptions.vic_year = vicvalues.vic_year

Answer 3

SELECT vicdescriptions.vid, 
       vicdescriptions.make, 
       vicdescriptions.vic_year, 
       vicdescriptions.optiontable, 
       vacdescriptions.accessory, 
       vacvalues.value, 
       vicvalues.valuetype, 
       vicvalues.value 
FROM   vicdescriptions 
       JOIN vicvalues 
         ON ( vicdescriptions.vic_make = vicvalues.vic_make 
              AND vicdescriptions.vic_year = vicvalues.vic_year ); 

我猜第5行，6个vacdescriptions，vacvalues >> vicdescriptions，vicvalues

Answer 4

是vacdescriptions和vacvalues的错字吗？

SELECT vicdescriptions.vid, 
       vicdescriptions.make, 
       vicdescriptions.vic_year, 
       vicdescriptions.optiontable, 
       **vicdescriptions.accessory, 
       vicvalues.value,** 
       vicvalues.valuetype, 
       vicvalues.value 
FROM   vicdescriptions 
       JOIN vicvalues 
         ON ( vicdescriptions.vic_make = vicvalues.vic_make 
              AND vicdescriptions.vic_year = vicvalues.vic_year ); 

Answer 5

SELECT VicDescriptions.VID, 
       VicDescriptions.Make, 
       VicDescriptions.VIC_Year, 
       VicDescriptions.OptionTable, 
       VacDescriptions.accessory, 
       VacValues.value, 
       VacValues.valuetype, 
       VacValues.value --(No such table as VicValues available in the database, you only have VacValues)
FROM   VicDescriptions 
       JOIN VacValues --(No such table available in the database, you only have VacValues) 
         ON ( VicDescriptions.VIC_Make = VacValues.VIC_Make 
              AND VicDescriptions.VIC_Year = VacValues.VIC_Year )
       JOIN VacDescriptions
         ON ( VacDescriptions.Period = VacValues.Period
               AND VacDescriptions.VAC = VacValues.VAC);