SQL Get “ISO Year” for ISO Week

Question

I need to calculate the year a week is assigned to. For example the 29th december of 2003 was assigned to week one of year 2004 (this is only for europe, I think). You can t

Answer 1

This solution does not return the correct value for the date '1-1-2027'.

The following will return the correct value with all dates i tested (and i tested quite a few).

SELECT YEAR(DATEADD(day, 26 - DATEPART(isoww, '2012-01-01'), '2012-01-01'))

As taken from: https://capens.net/content/sql-year-iso-week