主题：表内数据重复

表内数据重复怎么处理。

方法一：

 

http://www.foxtable.com/webhelp/scr/1478.htm

 

方法二：

 

Dim idx As String = "-1,"
Dim idx_temp As String = ""
Dim pdr As DataRow = Nothing
Dim count As Integer = 0
Dim cs As String = "第一列,第二列"
For Each dr As DataRow In DataTables("表A").Select("", cs)
    Dim flag As Boolean = False
    If pdr IsNot Nothing Then
        For Each c As String In cs.split(",")
            If pdr(c) <> dr(c) Then
                flag = True
                Exit For
            End If
        Next
        If flag Then
            If count > 1 Then
                idx &= idx_temp
            End If
            count = 1
            idx_temp = ""
        Else
            count += 1
            idx_temp &= dr("_Identify") & ","
        End If
    Else
        count += 1
    End If
    pdr = dr
Next

If count > 1 Then
    idx &= idx_temp
End If

 

Tables("表A").Filter = "_Identify not In (" & idx.trim(",") & ")"

'DataTables("表A").DeleteFor("_Identify In (" & idx.trim(",") & ")")

DataTables("表A").DeleteFor("_Identify not In (" & idx.trim(",") & ")")

 

改成

 

DataTables("表A").DeleteFor("_Identify In (" & idx.trim(",") & ")")

删除第一列重复数据，但是不想删除第一列值为空的数据（值看着是空的，但是里面好像是一个空格），有没有什么办法？

 

这个意思？

 

For Each dr As DataRow In DataTables("表A").Select("第一列 is not null", cs)