How can I set range value in number in sql server

Question

Hello,
I am using sql server 2012. I  want to display range value in int column. Suppose I have a table which contains
 columns called ID and dueDays. In dueDays there is data from 1 to 255 and slab range is 
[7,15,30,60,150,250].
Now I want to display range as per duedays, suppose from 1 to 7 , it should display 7.
1-7   =
 7
8-15  = 
15
16-60  = 60
61-150  =150
151-   151-250  =250
>250 = >250
Here is code snippet for create table and insert record.
Create Table Tmp
ID int ,
DueDays int
GO
DECLARE @I INT = 1
WHILE @I <=255
BEGIN
INSERT INTO TMP VALUES (@I,@I)
SET @I=@I +1
END
Please also see attached image of required result.
Prem Shah

Answer 1

hello Jingyan,
Thanks for reply but it doen't work in all case suppose range value is not exists in tmp then it is not working.
delete following record and check expected result is wrong .
delete from tmp where id in (3,7,15,30,60,150,250)
Prem Shah
Here is updated version:
Create Table Tmp ( ID int , DueDays int)
GO
DECLARE @I INT = 1
WHILE @I <=255
BEGIN
INSERT INTO TMP VALUES (@I,@I)
SET @I=@I +1
END
delete from tmp where id in (3,7,15,30,60,150,250)
--select * From Tmp
declare @range varchar(100)='3,7,15,30,60,150,250'
;with mySplit as (
SELECT distinct S.a.value('.', 'VARCHAR(100)') AS splitVal
FROM
(SELECT CAST (N'<H><r>' + REPLACE(@range, ',', '</r><r>')+ '</r></H>' AS XML) AS [vals] ) d
CROSS APPLY d.[vals].nodes('/H/r') S(a)
,mycte as (
SELECT a.id, iSNULL(a.id,splitVal) id2, splitVal FROM tmp a
full outer JOIN mySplit as s ON Cast(splitVal as int)=a.DueDays)
--select * from mycte
Select id, ISNULL(rng ,255) rangeValues from mycte m
outer APPLY (SELECT TOP 1 splitVal FROM mycte
WHERE id2 >= m.id2 AND splitVal IS NOT NULL
ORDER BY id2 ) d( rng)
WHERE id is not null
Order by id
drop table tmp