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选择使用 DAO 选择具有最高时间标记的给定 ID 记录
原标题:Select the record of a given id with the highest timestamp using DAO

如何在录音机上使用 DAO 进行以下操作?

SELECT TOP 1 * FROM foo WHERE id = 10 ORDER BY timestamp DESC

使用 < strong > SetIndex ,您只能使用一个索引,而使用 < strong > id 和 < strong > timestamp 似乎不使用该索引,并选择第一个有效索引。

问题回答

我完全不确定你想要什么

Dim rs As DAO.Recordset
Dim db As Database

Set db = CurrentDB

sSQL = "SELECT TOP 1 * FROM foo WHERE id = 10 ORDER BY timestamp DESC"
Set rs = db.OpenRecordset(sSQL)

查找不工作于所有记录。 这将工作 :

Set rs = CurrentDb.OpenRecordset("select * from table1")
rs.FindFirst "akey=1 and atext= b "

If Not rs.EOF Then Debug.Print rs!AKey

这样做不会:

Set rs = CurrentDb.OpenRecordset("table1")
rs.FindFirst "akey=1 and atext= b "




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