在访问报告中省略某些日期

Question

我在 Access 2013 中有一份打印设备日志的报告。每件设备都列出了一堆日期。我只想打印每件设备的最新日期。我已经搜索了互联网和这个网站，但没有运气。因此，任何建议将不胜感激。 我的 SQL 语句是： SELECT dbo_eq_location_transfer_d.equipment_id，dbo_equipment.description，dbo_eq_location_transfer_d.transaction_no，dbo_eq_location_transfer_d.job_no，dbo_jobs.description，dbo_eq_location_transfer_d.date_booked，dbo_eq_location_transfer_d.delivery_time，dbo_eq_location_transfer_d.line_no，dbo_eq_location_transfer_d.row_modified_by，dbo_eq_location_transfer_d.comment FROM (dbo_eq_location_transfer_d 内部联接 dbo_jobs ON dbo_eq_location_transfer_d.job_no = dbo_jobs.job_no) 内部联接 dbo_equipment ON dbo_eq_location_transfer_d.equipment_no = dbo_equipment.equipment_no ORDER BY dbo_eq_location_transfer_d.equipment_id, dbo_eq_location_transfer_d.transaction_no;

date_booked 字段是我试图缩小范围的日期字段。我有一个有效的简单 SQL 查询，我一直在尝试将其复制到 about SQL 中，但似乎无法使其网格化。这是： 选择 [dbo_eq_location_transfer_d.equipment_no]，Max(dbo_eq_location_transfer_d.date_booked) AS [“最新日期”] FROM dbo_eq_location_transfer_d GROUP BY [dbo_eq_location_transfer_d.equipment_no];

Answer 1

在您的查询中，将日期字段条件设置为：

>Now()-30

这将显示过去 30 天的任何日期，只需将 30 更改为您想要查看的天数。

Answer 2

现在我了解了您的结构和数据，这就是我所做的： (1) 创建以下查询，为每个 'equipment_no' 选择最近的 'date_booked'；保存名为“23020071_A”的查询：

SELECT dbo_eq_location_transfer_d.equipment_no, 
First(dbo_eq_location_transfer_d.transaction_no) AS FirstOftransaction_no, 
First(dbo_eq_location_transfer_d.job_no) AS FirstOfjob_no, 
First(dbo_eq_location_transfer_d.date_booked) AS FirstOfdate_booked
FROM (dbo_eq_location_transfer_d 
INNER JOIN dbo_jobs ON dbo_eq_location_transfer_d.job_no = dbo_jobs.job_no) 
INNER JOIN dbo_equipment ON dbo_eq_location_transfer_d.equipment_no = dbo_equipment.equipment_no
GROUP BY dbo_eq_location_transfer_d.equipment_no
ORDER BY First(dbo_eq_location_transfer_d.date_booked) DESC;

(2) 我创建了以下查询，将新查询与您现有的查询相结合：

SELECT dbo_eq_location_transfer_d.equipment_id, dbo_equipment.description, 
dbo_eq_location_transfer_d.transaction_no, dbo_eq_location_transfer_d.job_no,
dbo_jobs.description, dbo_eq_location_transfer_d.date_booked, 
dbo_eq_location_transfer_d.delivery_time, dbo_eq_location_transfer_d.line_no, 
dbo_eq_location_transfer_d.row_modified_by, dbo_eq_location_transfer_d.comment
FROM 23020071_A INNER JOIN ((dbo_eq_location_transfer_d 
INNER JOIN dbo_jobs ON dbo_eq_location_transfer_d.job_no = dbo_jobs.job_no) 
INNER JOIN dbo_equipment ON dbo_eq_location_transfer_d.equipment_no = dbo_equipment.equipment_no) 
ON ([23020071_A].FirstOftransaction_no = dbo_eq_location_transfer_d.transaction_no) 
AND ([23020071_A].equipment_no = dbo_eq_location_transfer_d.equipment_no) 
AND ([23020071_A].FirstOfjob_no = dbo_eq_location_transfer_d.job_no)
ORDER BY dbo_eq_location_transfer_d.equipment_id, dbo_eq_location_transfer_d.transaction_no;

现在，当我运行第二个查询时，它只返回该设备的最新行。