Here is how part of our database works. We have a table called "Events." Inside the "Events" table, we list various events which takes place for each of our clients. The first event for any client should be "Opened Case." However, some of my employees have not been listing this event so we do not know when the case was actually opened. In theory, all cases should have an "Opened Case" event in them. Is there a way to query that table to find which cases do not contain that event? Or is that more a programming issue? Thanks for any help?