Hi,

How about this approach:

DECLARE @BegDate DATETIME = '20000701',

@EndDate DATETIME = '20000707';

Declare @tHolidays TABLE (Holiday DATETIME PRIMARY KEY);

INSERT INTO @tHolidays (Holiday)

SELECT Holiday FROM (VALUES (CAST('20000529' AS DATETIME)),

('20000704'), ('20000904'), ('20001123'), ('20001124'), ('20001225'), ('20010101'), ('20010528'), ('20010704'), ('20010903'), ('20011122'),

('20011123'), ('20011225'), ('20020101'), ('20020527'), ('20020704'), ('20020902'), ('20021128'), ('20021129'), ('20021225'), ('20030101'),

('20030526'), ('20030704'), ('20030901'), ('20031127'), ('20031128'), ('20031225'), ('20040101'), ('20040531'), ('20040705'), ('20040906'),

('20041125'), ('20041126'), ('20041224'), ('20041231'), ('20050530'), ('20050704'), ('20050905'), ('20051124'), ('20051125'), ('20051226'),

('20060102'), ('20060529'), ('20060704'), ('20060904'), ('20061123'), ('20061124'), ('20061225'), ('20070101'), ('20070528'), ('20070704'),

('20070903'), ('20071122'), ('20071123'), ('20071225'), ('20080101'), ('20080526'), ('20080704'), ('20080901'), ('20081127'), ('20081128'),

('20081225'), ('20090101'), ('20090525'), ('20090703'), ('20090907'), ('20091126'), ('20091127'), ('20091225'), ('20100101'), ('20100531'),

('20100705'), ('20100906'), ('20101125'), ('20101126'), ('20101224'), ('20101231'), ('20110530'), ('20110704'), ('20110905'), ('20111124'),

('20111125'), ('20111226'), ('20120102'), ('20120528'), ('20120704'), ('20120903'), ('20121122'), ('20121123'), ('20121225'), ('20130101'),

('20130527'), ('20130704'), ('20130902'), ('20131128'), ('20131129'), ('20131225'), ('20140101'), ('20140526'), ('20140704'), ('20140901'),

('20141127'), ('20141128'), ('20141225'), ('20150101'), ('20150525'), ('20150703'), ('20150907'), ('20151126'), ('20151127'), ('20151225'),

('20160101'), ('20160530'), ('20160704'), ('20160905'), ('20161124'), ('20161125'), ('20161226'), ('20170102'), ('20170529'), ('20170704'),

('20170904'), ('20171123'), ('20171124'), ('20171225'), ('20180101'), ('20180528'), ('20180704'), ('20180903'), ('20181122'), ('20181123'),

('20181225'), ('20190101'), ('20190527'), ('20190704'), ('20190902'), ('20191128'), ('20191129'), ('20191225'), ('20200101'), ('20200525'),

('20200703'), ('20200907'), ('20201126'), ('20201127'), ('20201225'), ('20210101'), ('20210531'), ('20210705'), ('20210906'), ('20211125'),

('20211126'), ('20211224'), ('20211231'), ('20220530'), ('20220704'), ('20220905'), ('20221124'), ('20221125'), ('20221226'), ('20230102'),

('20230529'), ('20230704'), ('20230904'), ('20231123'), ('20231124'), ('20231225'), ('20240101'), ('20240527'), ('20240704'), ('20240902'),

('20241128'), ('20241129'), ('20241225'), ('20250101'), ('20250526'), ('20250704'), ('20250901'), ('20251127'), ('20251128'), ('20251225'),

('20260101'), ('20260525'), ('20260703'), ('20260907'), ('20261126'), ('20261127'), ('20261225'), ('20270101'), ('20270531'), ('20270705'),

('20270906'), ('20271125'), ('20271126'), ('20271224'), ('20271231'), ('20280529'), ('20280704'), ('20280904'), ('20281123'), ('20281124'),

('20281225'), ('20290101'), ('20290528'), ('20290704'), ('20290903'), ('20291122'), ('20291123'), ('20291225')

) h (Holiday);

SELECT

(DATEDIFF(dd, @BegDate, @EndDate) + 1)

-(DATEDIFF(wk, @BegDate, @EndDate) * 2)

-(CASE WHEN DATENAME(dw, @BegDate) = 'Sunday' THEN 1 ELSE 0 END)

-(CASE WHEN DATENAME(dw, @EndDate) = 'Saturday' THEN 1 ELSE 0 END)

- (SELECT SUM(CASE WHEN DATENAME(dw, Holiday) = 'Saturday' Or DATENAME(dw, Holiday) = 'Sunday' THEN 0 ELSE 1 END)

FROM @tHolidays WHERE Holiday >= @BegDate AND Holiday <= @EndDate);

Lars