create proc p_SelectTenTable 

as

create table #temp(userID int,userName varchar(50),userTrueName varchar(50)，userBirthday datetime)
declare @count int
 select count(*)=@count from table where stuName like 'wu%'
if(@count>5)
begin
set @count=5
insert into #temp select top 5 userID,userName,userTrueName，userBirthday  from table where stuName like 'wu%'
end
else
begin
insert into #temp select top 5 userID,userName,userTrueName，userBirthday  from table where stuName like 'wu%'
end
insert into #temp select top (10-@count) from table where year(userBirthday) > 1990
return #temp