Question

copying from one recordset to another

Asked by: d_glenn

Hello,

Can anyone provide an example of updating one ADO recordset with another ADO recordset?  Please let me know if I need to provide some clarification.


Thanks,
DG

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Asked On
2003-09-22 at 08:23:17ID20745216
Tags

another

,

one

,

recordset

Topic

Visual Basic Programming

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Answers

 

by: mort1652Posted on 2003-09-22 at 08:36:25ID: 9406482

Hi DG,

Do you mean copy the contents of one RS to another?
Or update the values in one RS from the values in another (field for field)?

Could you supply some clarification :)

Thanks

Mort

 

by: d_glennPosted on 2003-09-22 at 08:41:26ID: 9406522

Mort,
I want to copy the contents of one RS to another.

Thanks,
DG

 

by: d_glennPosted on 2003-09-22 at 08:43:43ID: 9406545

BTW, the recordset will be very small, so speed isn't a big issue.

Thanks,
DG

 

by: SethiPosted on 2003-09-22 at 08:52:56ID: 9406614

Use Clone method to create copy or copies of a recordset.

 

by: SethiPosted on 2003-09-22 at 08:54:15ID: 9406624

 

by: d_glennPosted on 2003-09-22 at 09:29:53ID: 9406889

Thanks, I just gave that a try.  Unfortunately my recordset doesn't support bookmarks, so the clone method won't work for me.  

Any other ideas?

Thanks,
David

 

by: d_glennPosted on 2003-09-22 at 09:31:30ID: 9406898

Clarification, I should have said "my PROVIDER doesn't support bookmarks..." instead of recordset.

 

by: mort1652Posted on 2003-09-22 at 09:42:36ID: 9406980

Hi David,

Here is some sample code for VB6 on Oracle:
Please note that this code is used to copy a row... you will have to do some more footwork to ensure PK violations don't occur.

What is the context of your requirement?

Private Sub Tester()
Dim rsOld As ADODB.Recordset
Dim rsNew As ADODB.Recordset
Dim nProgress As Integer
Dim nFieldCount As Integer

On Error GoTo EHTester
   
    Set rsOld = New ADODB.Recordset
    Set rsNew = New ADODB.Recordset
    rsOld.Open "Select * From DbTable Where Key = 5", adoCon, adOpenDynamic, adLockBatchOptimistic
   
    rsNew.CursorLocation = adUseClient
    rsNew.Open "Select * From DbTable Where 1=2", adoCon, adOpenKeyset, adLockOptimistic
   
   
    Do Until rsOld.EOF
        If Not rsOld.EOF Then
            rsNew.AddNew
            nFieldCount = rsOld.Fields.Count - 1
            For nProgress = 0 To nFieldCount
                If rsNew.Fields(nProgress).Name = "KEY" Then
                    rsNew.Fields(nProgress).Value = rsOld.Fields(nProgress).Value + 1
                Else
                    rsNew.Fields(nProgress).Value = rsOld.Fields(nProgress).Value
                End If
            Next
        End If
        rsNew.Update
        rsOld.MoveNext
    Loop
   
    Exit Sub
    Resume
EHTester:
    MsgBox Err.Number & " - " & Err.Description & " has occurred in frmMain.Tester", vbOKOnly + vbCritical, " Error! "
   
End Sub

 

by: JohnBPricePosted on 2003-09-22 at 10:52:02ID: 9407526

try the .clone with  static cursor and/or client side cursors if you can, some providers will do bookmarks in some modes but not others.

 

by: RejojohnyPosted on 2003-09-23 at 00:05:52ID: 9410986

clone would create a copy (like a new pointer to the recordset) .. but deleting a record from the original recordset would delete the record in the copy too.
assuming u have the structure of both the recorsets .. try writing a code to loop thorugh the field and creating them
if u want to create a new recordset on the fly then
loop through the field collection of the original recordset  and use the newrocordset.fields.append method to add these fields to the new recordset and then loop through the original recordset (original recordset.eof = false) to add each record.

 

by: d_glennPosted on 2003-09-23 at 09:59:07ID: 9414543

Thanks for the comments.  I will give them a try and get back to you.

Thanks,
DG

 

by: RejojohnyPosted on 2004-01-13 at 06:52:01ID: 10104472

i think i have answered the question ..... the author has to get back if there has any more queries ...

 

by: moduloPosted on 2004-01-17 at 07:10:19ID: 10136264

PAQed - no points refunded (of 150)

modulo
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