访问-报表格式和显示

Question

我有一张表格，其以下日期为2014年3月2日，2014年3月5日，2014年6月21日，2014年8月16日，2015年1月5日。我需要一种方法来显示每个月的每一天，如果存在日期，则显示Y，如果不存在，则显示N。该表是动态的，可以添加更多日期。

示例：

          March 2014
1 | 2 | 3 | 4 | 5 | ... | 31
N | N | Y | N | Y | ... | N
          July 2014
1 | 2 | ... | 20 | 21 | 22 | ... | 31
N | N | ... | N  | Y  | N  | ... | N
          August 2014
1 | 2 | ... | 20 | 21 | 22 | ... | 31
N | N | ... | N  | Y  | N  | ... | N
          January 2015
1 | 2 | ... | 15 | 16 | 17 | ... | 31
N | N | ... | N  | Y  | N  | ... | N

我是Access的新手，所以将不胜感激：）

更新：如果我想将上面的示例更改为现在不希望仅返回“ Y”或“ N”的位置，而是现在要返回一个Project ID，我将如何编辑IIF语句？项目ID与日期存储在同一表中。

          March 2014
1 | 2 |  3  | 4  | 5   | ... | 31
N | N |  4B | N  | 2W  | ... | N
          July 2014
1 | 2 | ... | 20 | 21  | 22  | ... | 31
N | N | ... | N  | Z8  | N   | ... | N
          August 2014
1 | 2 | ... | 20 | 21  | 22  | ... | 31
N | N | ... | N  | E5  | N   | ... | N
          January 2015
1 | 2 | ... | 15 | 16  | 17  | ... | 31
N | N | ... | N  | 1FF | N   | ... | N

Answer 1

您需要编写一个CrossTab查询（枢轴）。类似于：

TRANSFORM iif(Count(*)>0,"Y","N") AS Val
SELECT Year(YourDate) AS Y, Month(YourDate) AS M
FROM YourTable
GROUP BY Year(YourDate), Month(YourDate)
PIVOT Day(YourDate) In ("01","02","03","04","05","06","07","08","09","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31");