sqlserver 自定义函数随机产生指定范围的随机数

/*
--创建视图
create view RandomView as select re=rand()

--自定义函数:取得指定范围的随机数
create function RandData(
@a int,
@b int)
returns decimal(38,0)
as
begin
declare @r decimal(38,0)
select @r=cast(re*(@b-@a)+@a as decimal(38,0)) from RandomView
return(@r)
end
go

select * from myview
select dbo.RandData(0,9)
*/