目标

我正在寻找一种方法来计算等于组的最小或最大项目数。我每隔几天收到一次商品，每两周输入一次。我需要查看每个EntryDate的最小值和最大值ReceivedDate，以及最小值和最大值处的项目计数。在MS Access中使用SQL。

输入项

tblItem

|    EntryDate    |   ReceivedDate   |
--------------------------------------
|   01/01/2016    |    16/12/2015    |
|   01/01/2016    |    15/12/2015    |
|   01/01/2016    |    10/12/2015    |
|   01/01/2016    |    10/12/2015    |
|   01/01/2016    |    10/12/2015    |
|   01/01/2016    |    10/12/2015    |
|   15/01/2016    |    05/01/2016    |
|   15/01/2016    |    05/01/2016    |
|   15/01/2016    |    04/01/2016    |
|   15/01/2016    |    03/01/2016    |
|   15/01/2016    |    03/01/2016    |
|   15/01/2016    |    03/01/2016    |

当前查询

SELECT tblItem.EntryDate, 
Min(tblItem.ReceivedDate) AS MinReceivedDate, 
Max(tblItem.ReceivedDate) AS MaxReceivedDate …