We have a database with a table called "Checked_In" and another table called "Received" and each of those tables has member IDs in them. The "Checked_In" table refers to members who have checked in for an event. The "Received" table refers to members we have received data for. What we need to do is look at the "Checked_In" table to see who has been checked in for an event and find out only the ones we have NOT received data for. So, we need to compare the ID's in one table to the ID's in the other. We tried writing it in SQL, but we're not getting the results we are hoping for. We are also unsure how to do this in Excel.
select * from database.dbo.Checked_In
where Scheduled_Date >= '2015-07-01' and Member_ID not in (select Member_ID from database.dbo.Received where Scheduled_Date >= '2015-07-01')