Question

我在Access 2013中有一个打印设备日志的报告。每件设备都列出了许多日期。我只想打印每件设备的最新日期。我搜索了互联网和这个网站没有运气。所以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 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 ORDER BY dbo_eq_location_transfer_d.equipment_id，dbo_eq_location_transfer_d.transaction_no;

date_booked字段是我正在尝试缩小范围的日期字段。我有一个简单的SQL查询可以工作，我一直在尝试复制到约SQL，但似乎无法让它进行网格化。它是： SELECT [dbo_eq_location_transfer_d.equipment_no]，Max（dbo_eq_location_transfer_d.date_booked）AS [“最新日期”] 来自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

现在我了解你的结构＆amp;数据，这是我做的：（1）创建以下查询以仅为每个'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，将新查询与现有查询相结合：

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。

在Access报告中省略某些日期

2 个答案: