VBA - 从电子表格的内容创建 ADODB.Recordset

发布于 2024-08-25 22:26:39 字数 378 浏览 10 评论 0原文

我正在开发一个查询 SQL 数据库的 Excel 应用程序。查询可能需要很长时间才能运行(20-40 分钟)。如果我错误编码了某些内容,可能需要很长时间才能出错或达到断点。我可以将结果保存到一张纸上,但当我处理记录集时,事情可能会崩溃。

当我调试以跳过查询数据库(第一次之后)时,有没有办法将数据加载到 ADODB.Recordset 中?

我会用这样的东西吗?

在 MS-Access VBA 中查询 Excel 工作表(使用 ADODB 记录集) )

I am working on an Excel application that queries a SQL database. The queries can take a long time to run (20-40 min). If I've miss-coded something it can take a long time to error or reach a break point. I can save the results to a sheet fine, it's when I am working with the record sets that things can blow up.

Is there a way to load the data into a ADODB.Recordset when I'm debugging to skip querying the database (after the first time)?

Would I use something like this?

Query Excel worksheet in MS-Access VBA (using ADODB recordset)

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评论(3

黑寡妇 2024-09-01 22:26:39

我必须安装 MDAC 才能获取 msado15.dll,一旦获得它,我就添加了对它的引用(在 Win7 64 位上):

C:\Program Files (x86)\Common Files\System\ado\msado15.dll

然后我创建了一个函数,通过传入当前活动工作簿中存在的工作表名称来返回 ADODB.Recordset 对象。如果其他人需要的话,这里是代码,包括 Test() Sub 来查看它是否有效:

Public Function RecordSetFromSheet(sheetName As String)

Dim rst As New ADODB.Recordset
Dim cnx As New ADODB.Connection
Dim cmd As New ADODB.Command

    'setup the connection
    '[HDR=Yes] means the Field names are in the first row
    With cnx
        .Provider = "Microsoft.Jet.OLEDB.4.0"
        .ConnectionString = "Data Source='" & ThisWorkbook.FullName & "'; " & "Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'"
        .Open
    End With
    
    'setup the command
    Set cmd.ActiveConnection = cnx
    cmd.CommandType = adCmdText
    cmd.CommandText = "SELECT * FROM [" & sheetName & "$]"
    rst.CursorLocation = adUseClient
    rst.CursorType = adOpenDynamic
    rst.LockType = adLockOptimistic
    
    'open the connection
    rst.Open cmd
    
    'disconnect the recordset
    Set rst.ActiveConnection = Nothing
    
    'cleanup
    If CBool(cmd.State And adStateOpen) = True Then
        Set cmd = Nothing
    End If
     
    If CBool(cnx.State And adStateOpen) = True Then cnx.Close
    Set cnx = Nothing
    
    '"return" the recordset object
    Set RecordSetFromSheet = rst

End Function

Public Sub Test()

Dim rstData As ADODB.Recordset
Set rstData = RecordSetFromSheet("Sheet1")

Sheets("Sheet2").Range("A1").CopyFromRecordset rstData

End Sub

Sheet1 数据:
字段 1 字段 2 字段 3
红A 1
蓝色B 2
绿色 C 3

应复制到 Sheet2 的内容:
红A 1
蓝色B 2
Green C 3

每次我想要进行更改并测试它时,这都为我节省了大量的 SQL 查询时间...--

Robert

I had to install the MDAC to get the msado15.dll and once I had it I added a reference to it from (on Win7 64bit):

C:\Program Files (x86)\Common Files\System\ado\msado15.dll

Then I created a function to return an ADODB.Recordset object by passing in a sheet name that exists in the currently active workbook. Here's the code for any others if they need it, including a Test() Sub to see if it works:

Public Function RecordSetFromSheet(sheetName As String)

Dim rst As New ADODB.Recordset
Dim cnx As New ADODB.Connection
Dim cmd As New ADODB.Command

    'setup the connection
    '[HDR=Yes] means the Field names are in the first row
    With cnx
        .Provider = "Microsoft.Jet.OLEDB.4.0"
        .ConnectionString = "Data Source='" & ThisWorkbook.FullName & "'; " & "Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'"
        .Open
    End With
    
    'setup the command
    Set cmd.ActiveConnection = cnx
    cmd.CommandType = adCmdText
    cmd.CommandText = "SELECT * FROM [" & sheetName & "$]"
    rst.CursorLocation = adUseClient
    rst.CursorType = adOpenDynamic
    rst.LockType = adLockOptimistic
    
    'open the connection
    rst.Open cmd
    
    'disconnect the recordset
    Set rst.ActiveConnection = Nothing
    
    'cleanup
    If CBool(cmd.State And adStateOpen) = True Then
        Set cmd = Nothing
    End If
     
    If CBool(cnx.State And adStateOpen) = True Then cnx.Close
    Set cnx = Nothing
    
    '"return" the recordset object
    Set RecordSetFromSheet = rst

End Function

Public Sub Test()

Dim rstData As ADODB.Recordset
Set rstData = RecordSetFromSheet("Sheet1")

Sheets("Sheet2").Range("A1").CopyFromRecordset rstData

End Sub

The Sheet1 data:
Field1 Field2 Field3
Red A 1
Blue B 2
Green C 3

What should be copied to Sheet2:
Red A 1
Blue B 2
Green C 3

This is saving me a HUGE amount of time from querying against SQL every time I want to make a change and test it out...

--Robert

围归者 2024-09-01 22:26:39

最简单的方法是使用 rs.Save "filename" 和 rs.Open "filename" 将客户端记录集序列化为文件。

Easiest would be to use rs.Save "filename" and rs.Open "filename" to serialize client-side recordsets to files.

掩耳倾听 2024-09-01 22:26:39

Range 获取 Recordset 的另一种方法是从目标 Range 创建 XMLDocument 并打开使用 Range.Value() 属性从该文档获取 Recordset

' Creates XML document from the target range and then opens a recordset from the XML doc.
' @ref Microsoft ActiveX Data Objects 6.1 Library
' @ref Microsoft XML, v6.0
Public Function RecordsetFromRange(ByRef target As Range) As Recordset
        ' Create XML Document from the target range.
        Dim doc As MSXML2.DOMDocument
        Set doc = New MSXML2.DOMDocument
        doc.LoadXML target.Value(xlRangeValueMSPersistXML)

        ' Open the recordset from the XML Doc.
        Set RecordsetFromRange = New ADODB.Recordset
        RecordsetFromRange.Open doc
End Function

如果您想使用上面的示例,请确保设置对 Microsoft ActiveX Data Objects 6.1 LibraryMicrosoft XML, v6.0 的引用。如果需要,您还可以将此功能更改为后期绑定。

调用示例

' Sample of using `RecordsetFromRange`
' @author Robert Todar <[email protected]>
Private Sub testRecordsetFromRange()
    ' Test call to get rs from Range.
    Dim rs As Recordset
    Set rs = RecordsetFromRange(Range("A1").CurrentRegion)

    ' Loop all rows in the recordset
    rs.MoveFirst
    Do While Not rs.EOF And Not rs.BOF
        ' Sample if the fields `Name` and `ID` existed in the rs.
        ' Debug.Print rs.Fields("Name"), rs.Fields("ID")

        ' Move to the next row in the recordset
        rs.MoveNext
    Loop
End Sub

Another alternative to get a Recordset from a Range would be to create and XMLDocument from the target Range and open the Recordset from that document using the Range.Value() property.

' Creates XML document from the target range and then opens a recordset from the XML doc.
' @ref Microsoft ActiveX Data Objects 6.1 Library
' @ref Microsoft XML, v6.0
Public Function RecordsetFromRange(ByRef target As Range) As Recordset
        ' Create XML Document from the target range.
        Dim doc As MSXML2.DOMDocument
        Set doc = New MSXML2.DOMDocument
        doc.LoadXML target.Value(xlRangeValueMSPersistXML)

        ' Open the recordset from the XML Doc.
        Set RecordsetFromRange = New ADODB.Recordset
        RecordsetFromRange.Open doc
End Function

Make sure to set a reference to both Microsoft ActiveX Data Objects 6.1 Library and Microsoft XML, v6.0 if you want to use the example above. You could also change this function to late binding if so desired.

Example call

' Sample of using `RecordsetFromRange`
' @author Robert Todar <[email protected]>
Private Sub testRecordsetFromRange()
    ' Test call to get rs from Range.
    Dim rs As Recordset
    Set rs = RecordsetFromRange(Range("A1").CurrentRegion)

    ' Loop all rows in the recordset
    rs.MoveFirst
    Do While Not rs.EOF And Not rs.BOF
        ' Sample if the fields `Name` and `ID` existed in the rs.
        ' Debug.Print rs.Fields("Name"), rs.Fields("ID")

        ' Move to the next row in the recordset
        rs.MoveNext
    Loop
End Sub
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