Select * From Topic Where GroupID = 13 And ID > 9877 And ID <= 9882 Order By AddTime Desc
Select Top 1 * From Topic Where GroupID = 13 And ID <= 9877 Order By AddTime Desc
Select Top 1 * From Topic Where GroupID = 13 And ID <= 9877 Order By AddTime Desc
union all
Select Top 1 * From Topic Where GroupID = 13 And ID <= 9877 Order By AddTime Desc