我在Access中有一个表,其中包含相关字段EFTRecID,EFTRecIDNum和CreatedBy。 EFTRecIDNum是一个自动编号字段,EFTRecID连接所需的格式" CE" &安培; EFTRedIDNum。我试图返回当前用户创建的EFTRecID字段中的最高值。为此,我尝试执行一个子查询,找到Max(EFTRecIDNum)WHERE Created =我的名字。但是,它不是返回最大值,而是以我的名字返回所有值。我知道我可以使用format选项来格式化EFTRecIDNum字段,但我需要能够以CE456格式进行搜索。
TL; DR:查询返回所有带有我姓名的记录,而不是带有我姓名的最大记录。
Public Sub DownloadMyRecords()
Dim intI As Integer 'Used for looping in a variety of locations
strSQL = "SELECT EFTRecID FROM tblEFTRec WHERE (SELECT MAX(EFTRecIDNum) FROM tblEFTRec WHERE CreatedBy = '" & Application.UserName & "')"
Set cnn = New ADODB.Connection
With cnn
.Provider = "Microsoft.ACE.OLEDB.12.0;Data Source=" & dbLocation & "\" & dbName & ";Jet OLEDB:Database Password=" & DBPWord
.Open dbLocation & "\" & dbName
End With
Debug.Print strSQL
Set rst = New ADODB.Recordset
rst.CursorLocation = adUseServer
rst.Open Source:=strSQL, ActiveConnection:=cnn, _
CursorType:=adOpenForwardOnly, LockType:=adLockOptimistic, _
Options:=adCmdText
Debug.Print (rst.GetString)
rst.Close
cnn.Close
Set rst = Nothing
Set cnn = Nothing
End Sub
答案 0 :(得分:2)
请尝试使用此SQL语句:
strSQL = "SELECT EFTRecID
FROM tblEFTRec
WHERE EFTRecIDNum = (SELECT MAX(EFTRecIDNum) FROM tblEFTRec WHERE CreatedBy = '" & Application.UserName & "')"
答案 1 :(得分:1)
尝试使用:
"SELECT EFTRecID FROM tblEFTRec
WHERE EFTRecIDNum = (SELECT MAX(EFTRecIDNum) FROM tblEFTRec
WHERE CreatedBy = '" & Application.UserName & "')"
以下哪些方法无效?
"SELECT MAX(EFTRecID) FROM tblEFTRec
WHERE CreatedBy = '" & Application.UserName & "'"