Changing the Field Data Type with SQL command

 
Sub ChangeFieldType() 
    Dim conn As ADODB.Connection 
    Dim strTable As String 
    Dim strCol As String 

    On Error GoTo ErrorHandler 
    Set conn = CurrentProject.Connection 

    strTable = "myTable" 
    strCol = "ID" 
    conn.Execute "ALTER TABLE " & strTable & " ALTER COLUMN " & strCol & " CHAR(15);" 
ExitHere: 
    conn.Close 
    Set conn = Nothing 
    Exit Sub 
ErrorHandler: 
    MsgBox Err.Number & ":" & Err.Description 
    Resume ExitHere 
End Sub

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Changing the Field Data Type with SQL command : Table Column Field « Access « VBA / Excel / Access / Word

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