Tuesday, 22 September 2020

How to find first weekday in the month in MSSQL


declare @n datetime = dateadd(mm,0,getDate())

   declare @FirstWeekDayOfMonth int

   SELECT @FirstWeekDayOfMonth= CASE

         WHEN Datename(dw, Dateadd(dd, -Datepart(dd, @n) + 1, @n)) = 'Saturday' THEN Day(Dateadd(dd, -Datepart(dd, @n) + 3, @n))

         WHEN Datename(dw, Dateadd(dd, -Datepart(dd, @n) + 1, @n)) = 'Sunday' THEN Day(Dateadd(dd, -Datepart(dd, @n) + 2, @n))

         ELSE Day(Dateadd(dd, -Datepart(dd, @n) + 1, @n))

       END 

   select @FirstWeekDayOfMonth



Note: to find out first day of next month , change  first line to dateadd(mm,1,getDate()) 


1st day of next N month , change the first line to dateadd(mm,n,getDate())

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