There is no such function in Lotus Notes.
If you want create a reporting function, you need to import the data into some other application for the reporting you require. This can be as simple as a MS Acces database (with the properly data acces drivers installed), etc. This can be quite complex that will be successful directly proportional to your familiarity with Acces, or whatever external appllicatoin you chose (Crystal Reports, etc.)
Depending on the size of your views, I have found that IntelliView is a really good application that adds onto Lotus Notes. If you have this short-timeline project deliverable, you could probably achieve it with an evaluation copy of Intelliview, then get a purchase approved.
Our cross database reporting needs accessed really large databases and Intelliview was very slow and unwieldy for us when we evaluated it. However, I think we could have made it work well if we had optimized our views (e.g. changed them to Manual refresh options and run a programmed Updall to refresh the data in sync with our reporting procedures).
Also, from what I have seen, this application continues to improve and would be even better than what we evaluated 18 months ago.
Finally, IntelliView, which works best for a small group responsible for reporting (in my opinion), has a sister product called IntelliPrint that is good for end users, which you might also want to check out.