You can accomplish this using a recursive CTE
CREATE TABLE ranges (
ColA int,
ColB char,
LowRange int,
HighRange int,
);
INSERT INTO ranges
VALUES (1, 'A', 1, 5),
(2, 'B', 5, 10);
GO
CREATE VIEW range_view
AS
WITH each AS
(
SELECT ColA, ColB, LowRange AS n, HighRange
FROM ranges
UNION ALL
SELECT ColA, ColB, n + 1, HighRange
FROM each
WHERE n + 1 <= HighRange
)
SELECT ColA, ColB, n
FROM each
GO
SELECT * FROM range_view
DROP VIEW range_view
DROP TABLE ranges;