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

You can do it something like:

declare @Week_Number int, @Year int, @Year_Start_Day date, @Week_Day date

select 
    @Week_Number = 1,
    @Year = 2016

select @Year_Start_Day = cast(@Year as nvarchar(4)) + '0101'
select @Week_Day =  dateadd(wk, @Week_Number, @Year_Start_Day)

select dateadd(dd, 1 - datepart(weekday, @Week_Day), @Week_Day)