SQL Convert Week Number to Date (dd/MM)

Question

I am trying to convert the week number (for example: 21) in SQL-Server to the date (from the Monday of that week) in dd/MM format.

Answer 1

This will do:

DECLARE @y int = 2016,
        @w int = 21

SELECT CONVERT(nvarchar(5),DATEADD(day,@w*7-(DATEPART(WEEKDAY,CAST(@y as nvarchar(4))+'-01-01')-2),CAST(@y as nvarchar(4))+'-01-01'),3)

Output:

23/05