DECLARE @start Date = '19900101', @years TINYINT = 20;
;WITH src AS
(
SELECT TOP (DATEDIFF(DAY,@start, DATEADD(YEAR,@years, @start)))
d = DATEADD(DAY, ROW_NUMBER() OVER (ORDER BY s1.number)-1, @start)
FROM master.dbo.spt_values AS s1
CROSS JOIN master.dbo.spt_values AS s2
),
W AS
(
SELECT d,
wd = DATEPART(WEEKDAY,d),
wdname = DATENAME(WEEKDAY,d),
wnum = DATEPART(ISO_WEEK,d),
qnum = DATEPART(QUARTER, d),
y = YEAR(d),
m = MONTH(d),
mname = DATENAME(MONTH,d),