A query to SELECT a number range - sql

Question

I am having the following problem.
I would like to select a currency value from a database which will act as a default value on the top result of the query (this part is already done and is not a part of my main problem).
I want to use a query that kind of looks like this:
SELECT valkurs, valkurs 'vk'
FROM xx
WHERE valkod='EUR' AND foretagkod=300
UNION
--(My problem is that i can't find out what to write here)
My problem is that I would like to attach a range of values from 1.0 to 20.0 with 0.1 in incremental steps to the original query mentioned above.
An example output can look like this:
8.88, 8.88
1.0, 1.0
1.1, 1.1
1.2, 1.2
...
20.0, 20.0
Is it possible anyhow?
Due to implementation issues this has to be done in a query...

Answer 1

You can use the system table Master..spt_values to generate a sequential list:
SELECT Number = CAST(1 + (Number / 10.0) AS DECIMAL(4, 1)),
Number2 = CAST(1 + (Number / 10.0) AS DECIMAL(4, 1))
FROM Master..spt_values
WHERE Type = 'P'
AND Number BETWEEN 0 AND 200
So to combine in the correct order with your current query I would use:
SELECT valkurs, VK = valkurs
FROM ( SELECT valkurs, SortOrder = 0
FROM xx
WHERE valkod = 'EUR'
AND foretagkod = 300
UNION ALL
SELECT valkurs = CAST(1 + (Number / 10.0) AS DECIMAL(4, 1)), SortOrder = 1
FROM Master..spt_values
WHERE Type = 'P'
AND Number BETWEEN 0 AND 190
) T
ORDER BY T.SortOrder, t.valkurs;
ADDENDUM
There are some that do not advocate the use of Master..spt_values due to the fact that it is not documented, so it could be removed from future versions of sql-server. If this is a major concern you can use ROW_NUMBER() to generate a sequential list (using any table with enough rows as the source, I have gone for sys.all_objects):
SELECT valkurs, VK = valkurs,
FROM ( SELECT valkurs, SortOrder = 0
FROM xx
WHERE valkod = 'EUR'
AND foretagkod = 300
UNION ALL
SELECT TOP 191
valkurs = 1 + ((ROW_NUMBER() OVER(ORDER BY object_id) - 1) / 10.0),
SortOrder = 1
FROM sys.all_objects
) T
ORDER BY T.SortOrder, t.valkurs;

Answer 2

Old, but I think some people will benefit from my answer, which is a much better implementation than the accepted answer
WITH e1(n) AS
(
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1
), -- 10
e2(n) AS (SELECT 1 FROM e1 CROSS JOIN e1 AS b), -- 10*10
e3(n) AS (SELECT 1 FROM e1 CROSS JOIN e2), -- 10*100
numbers as (SELECT n = ROW_NUMBER() OVER (ORDER BY n)/10.0
FROM e3)
select n, n from numbers
where n between 1 and 20