Hi Guys,
I would greatly appreciate if anyone could help me with my problems.
My project require me to export data from Excel to Access Database via VBA.
Here's an overview of the requirement:
A user will enter data into the Excel Template and afterwhich, through clicking a Buttom, it will automatically export the entered data in Excel to Access and check for duplication data in Access database. In the event that there is a duplication in the database, it will prompt the user that there is a duplication of data.
I am able to export data from Excel to Access through the code from
excelguru.ca/node/18
and these code do not check for any duplication of data in access.
Unfortunately, I do not have enough knowledge to understand and to modify these codes to check for duplication from the Access database. I would really appreciate if any1 could share some light on how to modify it or other useful resource to meet my requirement.
Here's a look at the code to export data from Excel to Access without checking of duplication:
[vba]Option Explicit
Sub DB_Insert_via_ADOSQL()
'Author : Ken Puls (excelguru)
'Macro purpose: To add record to Access database using ADO and SQL
'NOTE: Reference to Microsoft ActiveX Data Objects Libary required
Dim cnt As New ADODB.Connection, _
rst As New ADODB.Recordset, _
dbPath As String, _
tblName As String, _
rngColHeads As Range, _
rngTblRcds As Range, _
colHead As String, _
rcdDetail As String, _
ch As Integer, _
cl As Integer, _
notNull As Boolean
'Set the string to the path of your database as defined on the worksheet
dbPath = ActiveSheet.Range("B1").Value
tblName = ActiveSheet.Range("B2").Value
Set rngColHeads = ActiveSheet.Range("tblHeadings")
Set rngTblRcds = ActiveSheet.Range("tblRecords")
'Concatenate a string with the names of the column headings
colHead = " ("
For ch = 1 To rngColHeads.Count
colHead = colHead & rngColHeads.Columns(ch).Value
Select Case ch
Case Is = rngColHeads.Count
colHead = colHead & ")"
Case Else
colHead = colHead & ","
End Select
Next ch
'Open connection to the database
cnt.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & dbPath & ";"
'Begin transaction processing
On Error GoTo EndUpdate
cnt.BeginTrans
'Insert records into database from worksheet table
For cl = 1 To rngTblRcds.Rows.Count
'Assume record is completely Null, and open record string for concatenation
notNull = False
rcdDetail = "('"
'Evaluate field in the record
For ch = 1 To rngColHeads.Count
Select Case rngTblRcds.Rows(cl).Columns(ch).Value
'if empty, append value of null to string
Case Is = Empty
Select Case ch
Case Is = rngColHeads.Count
rcdDetail = Left(rcdDetail, Len(rcdDetail) - 1) & "NULL)"
Case Else
rcdDetail = Left(rcdDetail, Len(rcdDetail) - 1) & "NULL,'"
End Select
'if not empty, set notNull to true, and append value to string
Case Else
notNull = True
Select Case ch
Case Is = rngColHeads.Count
rcdDetail = rcdDetail & rngTblRcds.Rows(cl).Columns(ch).Value & "')"
Case Else
rcdDetail = rcdDetail & rngTblRcds.Rows(cl).Columns(ch).Value & "','"
End Select
End Select
Next ch
'If record consists of only Null values, do not insert it to table, otherwise
'insert the record
Select Case notNull
Case Is = True
rst.Open "INSERT INTO " & tblName & colHead & " VALUES " & rcdDetail, cnt
Case Is = False
'do not insert record
End Select
Next cl
EndUpdate:
'Check if error was encounted
If Err.Number <> 0 Then
'Error encountered. Rollback transaction and inform user
On Error Resume Next
cnt.RollbackTrans
MsgBox "There was an error. Update was not succesful!", vbCritical, "Error!"
Else
On Error Resume Next
cnt.CommitTrans
End If
'Close the ADO objects
cnt.Close
Set rst = Nothing
Set cnt = Nothing
On Error GoTo 0
End Sub
[/vba]
Any1 know how to modify these codes to check for duplication in Access before the code is entered to the database?
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