主题：[求助]合并表跳过重复数据

帮助上有合并表重复数据跳过的代码如下:

 

Dim Book As New XLS.Book("e:\Data\Ticket_cgbak.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("Ticket_cgbak").StopRedraw()
'注意以下数组中列名称的顺序,必须和Excel表中的列顺序一致
Dim nms() As String ={"Dticket_no","Dbarcode","Dcode","Dprice_in","Dprice_in_tax","Dprice_in_max","Dprice_in_tax_max","Dtax","Dnum","Dnum_min","Dnum_max","Dprice","DInclude_num","Dpack","Darea_produce","Dsale_mode","Ddate"}
'注意下面的循环变量从1开始,而不是从0开始,因为Excel表的第一行是标题
For n As Integer = 1 To Sheet.Rows.Count -1
    Dim bh As String = sheet(n,0).Text
    If DataTables("Ticket_cgbak").Find("Dticket_no = '" & bh & "'") Is Nothing Then '如果不存在同编号的订单
        Dim r As Row = Tables("Ticket_cgbak").AddNew()
        For m As Integer = 0 To nms.Length - 1
            r(nms(m)) = Sheet(n,m).Value
        Next
    End If
Next
Tables("Ticket_cgbak").ResumeRedraw()

可是我的Dticket_no 列有重复,Dbarcode列也有重复,如果Dticket_no 列+ Dbarcode 列就不会重复,如何设红字代码判断Dticket_no 列+ Dbarcode 列为唯一值判断重复?

求各位大师指点!谢谢!

此主题相关图片如下：订单4.bmp

类似：

谢谢你,我用内部表测试很完美,我导入的是加载的外部数据源sql2000结果报错:Column 'Dticket_no' is constrained to be unique.  Value '' is already present.

外部表 Dticket_no设置为值唯一的，所以值不能重复，改数据库表结构

是这样啊,知道了.谢谢你的帮助.