使用这种方式合并:http://www.foxtable.com/webhelp/topics/1533.htm
For Each dr1 As DataRow In DataTables("表A").Select("[金额] > 100")
Dim dr2 As DataRow = DataTables("表B").find("编号='" & dr1("编号") & "'")
If dr2 Is Nothing Then
dr2 = DataTables("表B").AddNew()
End If
For Each dc As DataCol In DataTables("表A").DataCols
dr2(dc.Name) = dr1(dc.name)
Next
Next