Haha, I have always been poor at diction especially when it comes it learning a new language. So the long haul is the values selected in the combo boxes will return queries of the same name (prefixed with qry). This will form a SQL for a merged query comparing the queries in question.
OK, don't worry about this being a language issue. Trust me, we have worked with a lot of people with this language problem before. We can be patient.
This statement of yours contains the fine point that I think everyone is tripping over.
You suggest that a comparison is involved. My understanding is that you have multiple queries that may in some ways be different but perhaps are similar in other ways, and you want to somehow compare them. It is this comparison that is important to you, but we are struggling to decide exactly what it is that is being compared.
Are you looking to compare the recordsets that each of the queries return; that is, to look for differences in the records returned by the queries being compared?
Perhaps we can try this from a different angle. Forget the queries for a moment. They are a means to an end. Tell us, without talking about queries or SQL or strings or ANYTHING that is database-technical, what is the end goal of the BUSINESS process? At the moment, we don't CARE about the theoretical query result. We need to know what is the business goal here. Once we get THAT out in the open, we might have some ideas for you.
If you have trouble with MY question here, don't hesitate to ask for clarification as well.
With that information plus your previous comments, perhaps we can reach a level of understanding that at the moment is evading us.