ACCESS 2010 SQL——在 SELECT TOP 子查询字段上使用 WHERE IN [英] ACCESS 2010 SQL-- using WHERE IN on SELECT TOP subquery field

问题描述

我想让这个查询告诉我 2013 年支出前 10 名的公司在 2012 年的支出！

I want this query to tell me the spending in 2012 of the companies who were the top 10 spenders in 2013!

SELECT [Company], 
       Sum([SPENDING])
FROM   [Data]
WHERE  [Company] IN (
                     SELECT TOP 10 [Company]
                     FROM          [Data]
                     WHERE         [Year] IN ("2013")
                     GROUP BY      Company
                     ORDER BY      Sum([SPENDING]) DESC
                     )
       AND [Year] IN ("2012")
GROUP BY Company
;

当我尝试运行它时，我没有收到任何错误，但 Access 说它正在运行查询"并且永远不会完成.数据的大小不是问题.

When I try to run it, I get no errors, but Access says it is "running query" and never finishes. The size of the data is not the problem.

这是我找到的最接近的示例，但它并没有真正说明答案:MS Access - WHERE IN 工作，但 WHERE NOT IN 失败

This is the closest example I found, but it doesn't really give light to the answer: MS Access - WHERE IN works, but WHERE NOT IN fails

推荐答案

我怀疑这只是Access的优化器的一个限制.试试这样吧:

I suspect that this is just a limitation of Access's optimizer. Try it like this instead:

SELECT d.[Company], 
       Sum(d.[SPENDING])
FROM   [Data] As d
INNER JOIN    (
                     SELECT TOP 10 [Company]
                     FROM          [Data]
                     WHERE         [Year] IN ("2013")
                     GROUP BY      Company
                     ORDER BY      Sum([SPENDING]) DESC
              ) As t  ON  t.Company = d.Company
WHERE d.[Year] IN ("2012")
GROUP BY d.Company

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