[DAO][SQL] Dédoublonnage par DAO SQL [FAQ]

[cafeine]

Voici une méthode pour dédoublonner une plage qui utilise un SQL par DAO.
Cette méthode permet de combiner plusieurs champs non contigus pour enlever les doublons.

Pensez à ajouter la référence DAO 3.x

Code :

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 Sub DAOdedoublonnage()
'lancer le processus de dédoublonnage
Dim rT As Range, rD As Range, rCible As Range
Dim sql As String, group As String
 
On Error GoTo sortiePropre
 
Set rT = application.InputBox("Sélection de la table sans les libellés", _
                    "Dédoublonnage", Selection.AddressLocal, Type:=8)
 
Set rD = application.InputBox("Sélection du/des champs critère(s)", _
                    "Dédoublonnage", Selection.AddressLocal, Type:=8)
 
Set rCible = application.InputBox("Indication de la plage de restitution", _
                    "Dédoublonnage", Selection.AddressLocal, Type:=8)
 
Dim db As DAO.database
Dim rs As DAO.Recordset
 
Set db = DAO.OpenDatabase(rT.Parent.Parent.FullName, False, False, "Excel 8.0;HDR=NO;")
 
For i = 0 To rT.Columns.Count - 1
    If Intersect(rD, rT.Parent.Cells(rT.Row, rT.Column + i)) Is Nothing Then
        sql = sql & ", First([F" & i + 1 & "])"
    Else
        sql = sql & ", [F" & i + 1 & "]"
        group = group & ", [F" & i + 1 & "]"
    End If
Next i
sql = "SELECT " & Mid(sql, 3) & " " & _
        "FROM [" & rT.Parent.Name & "$" & rT.Address(False, False, xlA1) & "] " & _
        "GROUP BY " & Mid(group, 3)
'Debug.Print sql
Set rs = db.OpenRecordset(sql, DAO.dbOpenSnapshot)
rCible.CopyFromRecordset rs
rs.Close
 
sortiePropre:
Set rD = Nothing
Set rT = Nothing
Set rCible = Nothing
Set db = Nothing
Set rs = Nothing
 
End Sub