如何在 Access 中按 % 划分组/数据？

Question

这是我当前的代码，它根据用户的“FWB”分数将用户划分为不同的类别，只是应对、表现出色、过关等。

SELECT FWBScore, gender,respondentname,
IIf(FWBScore<=22.5,"Having Trouble",IIf(FWBScore>=25 AND FWBScore<=47.5,"Just Coping",IIf(FWBScore>=50. AND FWBScore<=75.0,"Getting By",IIf(FWBScore>=77.5,"Doing Great","Doing Great")))) AS Categories
FROM RESPONDENT;

现在，我不是将它们除以他们的 FWB 分数，而是将它们除以每个类别中做出响应的人的百分比，例如，最终结果看起来像这样

Doing Great  Getting by   Just Coping
24%           15%            10%

对此的任何帮助将不胜感激。

Answer 1

我建议只使用子查询和聚合。 我怀疑你想要：

SELECT AVG(IIF(Category = "Having Trouble", 100.0, 0)) as having_trouble,
       AVG(IIF(Category = "Just Coping", 100.0, 0)) as just_coping,
       AVG(IIF(Category = "Getting By", 100.0, 0)) as getting_by,
       AVG(IIF(Category = "Doing Great", 100.0, 0)) as doing_great      
FROM (SELECT FWBScore, gender, respondentname,
             IIf(FWBScore <= 22.5, "Having Trouble",
                 IIf(FWBScore >= 25 AND FWBScore <= 47.5, "Just Coping",
                     IIf(FWBScore >= 50. AND FWBScore <= 75.0, "Getting By",
                         IIf(FWBScore >= 77.5, "Doing Great", "Doing Great")
                        )
                    )
                ) AS Category
      FROM RESPONDENT
     ) as r;

第一个注意。 您可以使用switch()简化所有这些iif()条件。

第二个注意事项。 严格来说，子查询是没有必要的。 您可以将条件移动到外部查询。 我使用了子查询，所以我可以保留你原来的逻辑。

编辑：

使用switch() ：

FROM (SELECT FWBScore, gender, respondentname,
             SWITCH(FWBScore <= 22.5, "Having Trouble",
                    FWBScore >= 25 AND FWBScore <= 47.5, "Just Coping",
                    FWBScore >= 50. AND FWBScore <= 75.0, "Getting By",
                    FWBScore >= 77.5, "Doing Great", "Doing Great"
                   ) AS Category
      FROM RESPONDENT
     ) as r;