Wait a second, Does your Address table really contains EmailAddress field? I hope not. If that's the case I really don't know what are you trying to do because you completely screwed up the entire query. Basically what you are doing is you are not joining two tables, you are joining a table with same table with Email address. So of course you will get all the emailaddress from customers. I am pretty much sure you didn't build those table according to your level of writing queries. Do you really understand the join? If not stop what you are doing and study join first because it looks like what you are asking is completely messed up.