I have a request to have a table showing 7 days of sales. The catch is based on a select date filter. So if I select the date 10/16 I would want the table to show sales for 10/16,10/15,10/14,10/13,10/12,10/11,10/10. Then I select 10/07 and then I need the table to show 10/07,10/06,10/05,10/04,10/03,10/02,10/01.
Assuming your dates are actually dates, you should be able to do this using a date selector parameter, and a calculated field as a filter which says DATEDIFF(MIN([DATE]),[ParameterDate]) <=7. Then put the calculation on the filter shelf and set to true.