Well...don't think I've seen this hack before..I guess you might call it a setbased way to create a numbers table.
Who has done it this way before?
USE [dba]
GO
CREATE TABLE n(n int)
GO
INSERT INTO n(n)
SELECT CONVERT(int,m.n + hth.n + tth.n + th.n + h.n + t.n + u.n) AS [myDay99]
FROM (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS u
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS t
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS h
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS th
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS tth
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS hth
CROSS JOIN (SELECT '0' AS [n] UNION SELECT '1' AS [n] UNION SELECT '2' AS [n] UNION SELECT '3' AS [n] UNION SELECT '4' AS [n] UNION
SELECT '5' AS [n] UNION SELECT '6' AS [n] UNION SELECT '7' AS [n] UNION SELECT '8' AS [n] UNION SELECT '9' AS [n]
) AS m
ORDER BY 1
GO