Question

我有一个使用Access 2007的项目，但是正在努力编写一个简单的子查询。在尝试记录一定比率后，我试图从接下来的6次出现的表中获取结果。

我希望以下代码可以在Access中使用：

SELECT [runner name], [race ID], [race date], [placing], [class]
FROM runners
WHERE [runner name] IN
                 (SELECT [runner name] from 6F Full Form WHERE [ratio] >9       
ORDER BY [runner name], [race ID], [date], [placing], [class];

我收到以下错误消息。注意6F Full Form是我编写的查询，我正尝试在子查询中使用它。

查询表达式'[runner name] IN（从6F Full Form WHERE [ratio]> 9 中选择[runner name]的语法错误）

Answer 1

尝试一下：

 (SELECT [runner name] 
 FROM [6F Full Form] 
 WHERE [ratio] >9       
 ORDER BY [runner name], [race ID], [date], [placing], [class]);

Answer 2

当前SQL代码的问题在于，包含空格或reserved words的字段/表/查询名称必须用方括号括起来-因此

from 6F Full Form WHERE

应写为：

from [6F Full Form] WHERE

您的order by子句中也可能有错字：

SELECT ..., [race date], ...
...
ORDER BY ..., [date], ...;
                 ^--------------- Should this be [race date]?

值得补充的是，您也可以使用联接来实现此目的，例如：

select
    r.[runner name],
    r.[race id],
    r.[race date],
    r.[placing],
    r.[class]
from
    runners r inner join
    (select distinct f.[runner name] from [6f full form] f where f.[ratio] > 9) q 
    on r.[runner name] = q.[runner name]
order by
    r.[runner name],
    r.[race id],
    r.[race date],
    r.[placing],
    r.[class]

Access 2007中的子查询问题

2 个答案: