title: SSRS: How to add All option to SSRS dropdown filter?
body: <p>I'm using SQL Server Reporting Services for SQL 2008 R2. My reports are filtered by two drop-down menus that are populated from a table, one of them displays a build number. I'd like to give users the option to choose "All" and so return data for all build numbers and not just one.
  How do I add this option to my drop-down filter and make it work correctly?
  Thanks very much for any help provided.
  J.</p>