各位老师，我想实现一个功能需要让主键UserId赋值给GroupId，我写如下代码功能实现了，但是执行了两次sql 语句，不知道有没有简单方法？

        Dim cmd As New SQLCommand

        cmd.C

        cmd.CommandText = "in sert into {F_Users} (UserName,sex,Mobile,ID,QQ,Email,WeiXin,Address,AddGroupId) values( \'" & tb1 & "\',\'" & cb1 & "\',\'" & tb2 & "\',\'" & tb3 & "\',\'" & tb4 & "\',\'" & tb5 & "\',\'" & tb6 & "\',\'" & addr &"\',\'" & _GroupID & "\')"

        cmd.ExecuteNonQuery()

          Dim Users As List(Of String)

         Users=DataTables("ObjectList_table1").sqlGetValues("UserId"," Mobile=\'" & tb2 & "\'")

        For Each user As String In Users

            cmd.CommandText = "UP DATE {F_Users} SET GroupId= \'"& User & "\' WHERE Mobile =\'" & tb2 & "\'"

        cmd.ExecuteNonQuery()    

        Next