Question

Hello I’ve converted a spreadsheet into a SSRS report which is run on the 20th of month and I need to pass the 20th of the current month as a default value (start date) either through a custom expression or dataset. If the 20th falls on a Saturday, default to friday 19th. If the 20th falls on Sunday default to Friday 18th. How do I do this and what is the best way of doing it?

Answer 1

How about this:

DECLARE @daytwenty date;
SET @daytwenty = DATEADD(mm, DATEDIFF(mm, 0, getdate()) ,19) --Get Twentieth Day of current month

SELECT 
      CASE DATEPART(DW,@daytwenty)
         WHEN 1 THEN DATEADD(dd, -2, @daytwenty) --When the twentieth day is a Sunday, take two days off
         WHEN 7 THEN DATEADD(dd, -1, @daytwenty) --When the twentieth day is a Saturday, take one day off
         ELSE @daytwenty --Else the twentieth day is a weekday already
      END